Koh, the Face Stealer is a mythic Legendary Creature — Shapeshifter Spirit card from Avatar: The Last Airbender (TLA), collector number 107. Current market price: $0.39 (foil $1.09), TCGplayer market prices via Scryfall.
When Koh enters, exile up to one other target creature. Whenever another nontoken creature dies, you may exile it. Pay 1 life: Choose a creature card exiled with Koh. Koh has all activated and triggered abilities of the last chosen card.