From Pathfinder Lost Omens Character Guide, which isn't enabled.

Tail Spin

FEAT 5

Activity 2 actions

Prerequisites tailed goblin heritage; Hard Tail

You excel at using your tail as a weapon to upend your foes. Attempt a single Athletics check to Trip: Athletics up to two adjacent creatures. If you roll a success against a target, you get a critical success against that target instead.

Pathfinder Lost Omens Character GuideOGL