Skeletons you control get +1/+0 and have
haste (This creature can attack, and as soon as it comes under your control.).
When Corpses of the Lost enters the battlefield, create a 2/2 black Skeleton Pirate creature token.
At the beginning of your end step, if you
descended (You descended if a permanent card was put into your graveyard from anywhere.) this turn, you may pay 1 life. If you do, return Corpses of the Lost to its owner's hand.