There is a Legacy version
here.
Touch of Undeath
Focus 1Uncommon Cleric Focus Manipulate Void Source Player Core pg. 380 2.0Domain undeathCast [one-action] Range touch;
Targets 1 living creature
Defense Fortitude;
Duration varies
You attack the target's life force with undeath, dealing 1d6 void damage. The target must attempt a Fortitude save.
Critical Success The target is unaffected.
Success The target takes half damage.
Failure The target takes full damage, and
vitality effects heal it only half as much as normal for 1 round.
Critical Failure The target takes double damage, and vitality effects heal it only half as much as normal for 1 minute.
Heightened (+1) The damage increases by 1d6.