Split Hex Feat 18
Source Pathfinder Advanced Player's Guide
You siphon some of the power from an offensive hex you cast to direct it at a second target as well. If the next action you use is to Cast a Spell to cast a harmful hex with a single target, reduce its level by 2 (making it 2 levels lower than the maximum spell level you can cast). If you do, you can select a second target for that hex to affect.
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.
WitchThis indicates abilities from the witch class.