pf2e.fyi
From Pathfinder Impossible Magic, which isn't enabled.

Inevitable Return

REACTION
Activity reaction

Trigger A Small or Medium enemy within 30 feet dies.

The deaths of those around you simply fuel your undead army. You create a thrall in the triggering corpse's space. This thrall is the same size as the triggering creature.

Pathfinder Impossible MagicORC