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

Hobbling Criticals

FEAT 18

Your eidolon's unarmed attacks batter your foes into submission, hampering their movement. Whenever your eidolon gets a critical hit with one of their unarmed Strikes, the target must attempt a Fortitude save against your spell DC after taking the damage. This is a critical specialization effect.


Critical Success The target takes no additional effect.

Success The target takes a –10-foot circumstance penalty to its Speeds for 1 round.

Failure The target is Slowed 1 and takes a –10-foot circumstance penalty to its Speeds for 1 round.

Critical Failure The target is Slowed 2 and takes a –15-foot circumstance penalty to its Speeds for 1 round.

Pathfinder Impossible MagicORC