Sanguine Siphon Sanctioned Psyker-Biomancer

Description

Every time the psyker deals damage, they gain +1 stack of the sanguine siphon effect. If that damage was dealt to a target adjacent to the psyker, they gain +2 stacks instead. When the psyker suffers lethal damage, the stacks of sanguine siphon are removed to reduce this damage by -1 for each stack, until either all stacks are removed or the damage is no longer lethal.