Feign Death - EX

Whenever you take damage, you can attempt to feign death as a reaction. You immediately fall prone and attempt a Bluff check against each opponent that is aware of you. The DC for this check is equal to 10 + your opponent’s total Sense Motive skill bonus, or 15 + 1-1/2 × the opponent’s CR, whichever is greater. Any opponent that you succeed against believes that you are dead and acts accordingly unless it inspects your body as a standard action and succeeds at a Medicine, Perception, or Sense Motive check at the same DC to uncover your deception. Maintaining this ruse is a full action each turn.