Carmen, Cruel Skymarcher is a mythic Legendary Creature — Vampire Soldier card from The Lost Caverns of Ixalan Commander (LCC), collector number 5. Current market price: $7.74 (foil $0.67), TCGplayer market prices via Scryfall.
Flying Whenever a player sacrifices a permanent, put a +1/+1 counter on Carmen and you gain 1 life. Whenever Carmen attacks, return up to one target permanent card with mana value less than or equal to Carmen's power from your graveyard to the battlefield.