Corpses of the Lost

Skeletons you control get +1/+0 and have haste.

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 have descended this turn, you may pay 1 life. If you do,
return Corpses of the Lost to its owner's hand.
(You descended if a permanent card was put into
your graveyard from anywhere.)