Berrin, Chief Contractor

Other creatures you control have Skulk.
Whenever one or more creatures you control deal
damage to a player, you and that player reveal
cards from the top of your libraries until you
both reveal a creature card. The players who
revealed the card with the highest power loses life
equal to that card's power, then both players put
those cards into their hands and the revealed
cards on the bottom of their libraries in any
order.