You can curse the eyes of a wounded enemy.
Benefit(s): As a full-round action, you can curse a creature you’ve dealt damage to since the beginning of your last turn. The creature must succeed at a Fortitude save or its eyes become milky and its vision is obscured. For 1 round, any target the creature makes a ranged touch attack against gains concealment for the purposes of that attack. Special: A shaman or witch with this blood hex can use it against any creature she has dealt damage to in the past minute. A shaman or witch can use this blood hex as a standard action.
Pathfinder Player Companion: Magic Tactics Toolbox © 2016, Paizo Inc.; Authors: Alexander Augunas, Steven T. Helt, Thurston Hillman, and Ron Lundeen.