pf2e.fyi
From Pathfinder Lost Omens Hellfire Dispatches, which isn't enabled.

Shackles of Law

FEAT 0
Activity 2 actions
Archetype Hellknight
Prerequisites Order of the Chain

You attempt to subdue a target with an attack and a follow‐up grab. Make a melee Strike. If it hits and deals damage, you can attempt an Athletics check to Grapple the creature you hit. If you're wielding a flail or spiked chain, you can ignore Grapple's requirement that you have a hand free, and if you succeed at the Athletics check, you get a critical success instead. Both attacks count toward your multiple attack penalty, but the penalty doesn't increase until after you've made both of them.

Pathfinder Lost Omens Hellfire DispatchesORC