Undine Feats
Aquatic Eyes Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
As your connection to water grows, you can see more easily in places with less light, such as the depths of the ocean. You gain Low-Light Vision, or you gain Darkvision if your ancestry already has low-light vision.
Special If your ancestry has neither low-light vision nor darkvision, you can take this ancestry feat a second time to gain darkvision. You can't retrain out of this feat.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Brinesoul Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
Your elemental ancestor's legacy asserts itself as brackish water, like the seawater of the ocean. You gain the Salt Wound reaction.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Elemental Eyes Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
Prerequisites low-light vision
You can see in the darkness as easily as an elemental. You gain Darkvision.
Special You can select this feat only at 1st level, and you can't retrain into or out of this feat.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
IfritA type of geniekin descended from a being from the Plane of Fire.
OreadA type of geniekin descended from a being from the Plane of Earth.
SuliSulis are planar scions descended from jann.
SylphA type of geniekin descended from a being from the Plane of Air.
UndineA type of geniekin descended from a being from the Plane of Water.
Elemental Lore Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
You've devoted yourself to researching the secrets of the Inner Sphere. You gain the trained proficiency in your choice of Survival and either Arcana or Nature. If you would automatically become trained in Survival (from your background or class, for example), you instead become trained in a skill of your choice. You also become trained in the Lore associated with your Elemental Plane of origin (such as Plane of Fire Lore).
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
IfritA type of geniekin descended from a being from the Plane of Fire.
OreadA type of geniekin descended from a being from the Plane of Earth.
SuliSulis are planar scions descended from jann.
SylphA type of geniekin descended from a being from the Plane of Air.
UndineA type of geniekin descended from a being from the Plane of Water.
Genie Weapon Familiarity Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
You've trained with weapons used by your genie ancestors. You are trained with Falchions, Ranseurs, Scimitars, and Tridents.
In addition, you gain access to all uncommon geniekin weapons. For the purpose of determining your proficiency, martial geniekin weapons are simple weapons and advanced geniekin weapons are martial weapons.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
IfritA type of geniekin descended from a being from the Plane of Fire.
OreadA type of geniekin descended from a being from the Plane of Earth.
SuliSulis are planar scions descended from jann.
SylphA type of geniekin descended from a being from the Plane of Air.
UndineA type of geniekin descended from a being from the Plane of Water.
Mistsoul Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
You have a connection to vaporous forms of water, such as fog and mist. You gain the Mist Blending reaction.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Native Waters Feat 1
Source Pathfinder Lost Omens: Impossible Lands
You were born with or obtained a special connection to either fresh water or salt water. Once made, this decision can't be changed. Whenever you take your full rest in a natural body of water of the type corresponding to your connection, you recover additional Hit Points equal to your level, and if you have the Doomed or Fatigued conditions, you reduce them by 2 instead of 1.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Rimesoul Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
The water inside you is cold and frozen, like sheets of ice and frigid glaciers. You gain resistance to cold equal to half your level (minimum 1), and you treat environmental cold effects as if they were one step less severe (incredible cold becomes extreme, extreme cold becomes severe, and so on).
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Tide-hardened Feat 1
Source Pathfinder Lost Omens: Ancestry Guide
You're at home in the unpredictable tides. You gain a +1 circumstance bonus to saves against cold and water effects. If you roll a success on a save against a cold or water effect, you get a critical success instead.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Fluid Contortionist Feat 5
Source Pathfinder Lost Omens: Ancestry Guide
You can ignore difficult terrain caused by moving through tight spaces that aren't tight enough to force you to Squeeze. When you roll a critical failure on a check to Squeeze, you get a failure instead, and when you roll a success, you get a critical success instead.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Genie Weapon Flourish Feat 5
Source Pathfinder Lost Omens: Ancestry Guide
Prerequisites Genie Weapon Familiarity
Whenever you critically hit using a Falchion, Ranseur, Scimitar, Trident, or a geniekin weapon, you apply the weapon's critical specialization effect.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
IfritA type of geniekin descended from a being from the Plane of Fire.
OreadA type of geniekin descended from a being from the Plane of Earth.
SuliSulis are planar scions descended from jann.
SylphA type of geniekin descended from a being from the Plane of Air.
UndineA type of geniekin descended from a being from the Plane of Water.
Noble Resolve Feat 5
Source Pathfinder Lost Omens: Impossible Lands
Once, genies ruled vast kingdoms, and a remnant of that confidence and power is reflected in your strong will. You gain a +1 circumstance bonus to Will saves against effects with the mental trait. Regardless of success or failure, you become aware of the person who used the effect on you if they were visible to you at the time of use.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
IfritA type of geniekin descended from a being from the Plane of Fire.
OreadA type of geniekin descended from a being from the Plane of Earth.
SuliSulis are planar scions descended from jann.
SylphA type of geniekin descended from a being from the Plane of Air.
UndineA type of geniekin descended from a being from the Plane of Water.
Skillful Tail (Geniekin) Feat 5
Source Pathfinder Lost Omens: Ancestry Guide
You were born with a tail, and with practice you've learned how to perform simple Interact actions with it, such as opening an unlocked door. Your tail can't perform actions that require fingers or significant manual dexterity, including any action that would require a check to accomplish, and you can't use it to hold items.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
IfritA type of geniekin descended from a being from the Plane of Fire.
OreadA type of geniekin descended from a being from the Plane of Earth.
SuliSulis are planar scions descended from jann.
SylphA type of geniekin descended from a being from the Plane of Air.
UndineA type of geniekin descended from a being from the Plane of Water.
Steam Spell 
Feat 5
Source Pathfinder Lost Omens: Ancestry Guide
You transform your fire spells into steam, making them more effective underwater. If your next action is to Cast a Spell with the fire trait, you can cast it underwater. When you do so, it takes the form of scalding steam. Underwater creatures do not gain the normal fire resistance for being underwater against this spell, but they don't light things on fire or cause Persistent Fire Damage, nor do they add other effects that would apply to fire but not steam (at the GM's discretion).
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
MetamagicActions with the metamagic trait, usually from metamagic feats, tweak the properties of your spells. You must use a metamagic action directly before Casting the Spell you want to alter. If you use any action (including free actions and reactions) other than Cast a Spell directly after, you waste the benefits of the metamagic action. Any additional effects added by a metamagic action are part of the spell's effect, not of the metamagic action itself.
UndineA type of geniekin descended from a being from the Plane of Water.
Marid Magic Feat 9
Source Pathfinder Lost Omens: Ancestry Guide
You channel the magic of marids. You can cast Hydraulic Push and Obscuring Mist each once per day as 2nd-level arcane innate spells.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Miraculous Repair 
Feat 9
Source Pathfinder Lost Omens: Impossible Lands
Geniekin can't grant magical wishes, but some echo of power lingers within you. Faced with a mechanism that is damaged but not destroyed, you can wish it back into a functional state for a period of 10 minutes. The object must be mundane and no larger than 5 Bulk, such as a disabled locking mechanism in a door. For 10 minutes, the object functions as it should, ignoring any damage to its mechanism. This doesn't grant you any knowledge of what a device might do or how it ought to function. Once the 10 minutes are up, the object falls back into disrepair and is temporarily immune to Miraculous Repair for 1 day.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
ArcaneThis magic comes from the arcane tradition, which is built on logic and rationality. Anything with this trait is magical.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
IfritA type of geniekin descended from a being from the Plane of Fire.
OreadA type of geniekin descended from a being from the Plane of Earth.
SuliSulis are planar scions descended from jann.
SylphA type of geniekin descended from a being from the Plane of Air.
TransmutationEffects and magic items with this trait are associated with the transmutation school of magic, typically changing something's form.
UndineA type of geniekin descended from a being from the Plane of Water.
Strong Swimmer Feat 9
Source Pathfinder Lost Omens: Ancestry Guide
Your swim Speed increases to match your land Speed.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Genie Weapon Expertise Feat 13
Source Pathfinder Lost Omens: Ancestry Guide
Prerequisites Genie Weapon Familiarity
Whenever you gain a class feature that grants you expert or greater proficiency in certain weapons, you also gain that proficiency in Falchions, Ranseurs, Scimitars, Tridents, and all geniekin weapons in which you are trained.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
IfritA type of geniekin descended from a being from the Plane of Fire.
OreadA type of geniekin descended from a being from the Plane of Earth.
SuliSulis are planar scions descended from jann.
SylphA type of geniekin descended from a being from the Plane of Air.
UndineA type of geniekin descended from a being from the Plane of Water.
Planar Sidestep 
Feat 13
Source Pathfinder Lost Omens: Impossible Lands
Frequency once per day
Trigger A creature hits you with a melee Strike.
You shift your body briefly between planes, reducing the damage from your foe's attack. You gain resistance 25 to all damage against the triggering attack. Observers simply see you shimmer with elemental energy for a moment, just as the attack lands.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
ArcaneThis magic comes from the arcane tradition, which is built on logic and rationality. Anything with this trait is magical.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
ConjurationEffects and magic items with this trait are associated with the conjuration school of magic, typically involving summoning, creation, teleportation, or moving things from place to place.
IfritA type of geniekin descended from a being from the Plane of Fire.
OreadA type of geniekin descended from a being from the Plane of Earth.
SuliSulis are planar scions descended from jann.
SylphA type of geniekin descended from a being from the Plane of Air.
UndineA type of geniekin descended from a being from the Plane of Water.
Summon Water Elemental Feat 13
Source Pathfinder Lost Omens: Ancestry Guide
You can summon an elemental ally. Once per day, you can cast Summon Elemental as a 5th-level primal innate spell, but the elemental summoned must be a water elemental.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Translucent Skin Feat 13
Source Pathfinder Lost Omens: Ancestry Guide
Your body is translucent while underwater. Whenever you are fully submerged in water, you can Hide from other creatures even if you don't have cover against them and aren't Concealed from them.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
UndineA type of geniekin descended from a being from the Plane of Water.
Tidal Shield 
Feat 17
Source Pathfinder Lost Omens: Ancestry Guide
Frequency once per day
You conjure the force of the tides to gain a +4 circumstance bonus to AC until the end of your next turn. Any allies adjacent to you during the duration gain a +2 circumstance bonus to AC as long as they remain adjacent to you. You can Sustain the effect to a maximum duration of 5 rounds. When a creature receiving a circumstance bonus to AC from Tidal Shield would take damage from an attack, as a reaction, you can reduce the damage to that creature by 40; after you do so, Tidal Shield ends.
Effect: Tidal Shield
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
AbjurationEffects and magic items with this trait are associated with the abjuration school of magic, typically involving protection or wards.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
PrimalThis magic comes from the primal tradition, connecting to the natural world and instinct. Anything with this trait is magical.
UndineA type of geniekin descended from a being from the Plane of Water.
WaterEffects with the water trait either manipulate or conjure water. Those that manipulate water have no effect in an area without water. Creatures with this trait consist primarily of water or have a magical connection to the element.