Corpses of the Lost [The Lost Caverns of Ixalan] Kirin Spirit Set: Legends Type: Creature —

Set: Legends Type: Creature — Demon Rarity: Rare Cost: {3}{B}{B} At end of combat

put target creature card from an opponent's graveyard onto the battlefield under your control

The same is true for permanent spells you control and nonland permament cards you own that aren't on the battlefield

"Once Avacyn returned

Corpses of the Lost [The Lost Caverns of Ixalan] Kirin Spirit Set: Legends Type: Creature —Set: The Lost Caverns of Ixalan Type: Enchantment Rarity: Rare Cost: {2}{B} 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 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.)