Blade of Four Energies (Greater)Weapon 18
Source Pathfinder Secrets of Magic
Damage 1d6 Piercing
Type Martial
Price 20,000 gp
Weight light
This +2 greater striking shifting shortsword is formed of rapidly vibrating air and magical energy, though it uses the same statistics as iron. The wooden hilt is adorned with four gems, representing the energies of acid, cold, fire, and electricity, that sparkle in sequence at random intervals.
Activate 
Interact
Frequency once per round
Effect You draw magical energy from one of the gems. Roll 1d4. Until the start of your next turn, the weapon gains the corresponding rune:
Activate 
command, envision
Frequency once per day
Requirements The blade has an energy rune from the first activation
Effect You call upon the energy stored in the blade to explode outward. The blade of four energies casts a 7th-level spell with a DC of 38 that depends on the active rune:
- Acid Arrow for corrosive,
- Fireball for flaming,
- Cone of Cold for frost, or
- Lightning Bolt for shock.
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.
AgileThe multiple attack penalty you take with this weapon on the second attack on your turn is -4 instead of -5, and -8 instead of -10 on the third and subsequent attacks in the turn.
EvocationEffects and magic items with this trait are associated with the evocation school of magic, typically involving energy and elemental forces.
FinesseYou can use your Dexterity modifier instead of your Strength modifier on attack rolls using this melee weapon. You still use your Strength modifier when calculating damage.
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.
VersatileA versatile weapon can be used to deal a different type of damage than that listed in the Damage entry. This trait indicates the alternate damage type. For instance, a piercing weapon that is versatile S can be used to deal piercing or slashing damage. You choose the damage type each time you make an attack.