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You aren’t as easy to hit when surrounded.

Prerequisites: Perception 3 ranks

Benefit: You gain a +1 circumstance bonus to KAC against attacks from foes that flank you. If either foe has a CR that’s equal to or higher than your level, you don’t gain this bonus.

Teamwork Benefit: If you’re adjacent to an ally who also has this feat, you instead gain a +2 circumstance bonus to KAC against attacks from foes that flank you, and you gain this bonus no matter the CR of your opponents.