The witch can more effectively redirect effects to her proxy chosen by the gift of consumption hex.
When the witch succeeds at her Fortitude save against an effect that she has redirected to a proxy, the hexed creature takes a –4 penalty on its Fortitude save against the redirected effect. If the witch ever fails a Fortitude save or intentionally exposes herself to an effect that requires a Fortitude save, such as by ingesting a poison, she can redirect that effect to affect only the hexed creature, though the hexed creature can still attempt a saving throw to resist the effects. Once she has redirected an effect to another creature in this way, that creature cannot be affected by the gift of consumption hex again for 24 hours. The witch must have the gift of consumption hex to select this hex.
Pathfinder Player Companion: Potions & Poisons © 2017, Paizo Inc.; Authors: Kate Baker, Eleanor Ferron, Nathan King, Lyz Liddell, Luis Loza, Alex Putnam, Alex Riggs, and David Schwartz.