Kaya, Ghost Assassin is a mythic Legendary Planeswalker — Kaya card from Secret Lair Drop (SLD), collector number 247. Current market price: $3.63 (foil $4.51), TCGplayer market prices via Scryfall.
0: Exile Kaya or up to one target creature. Return that card to the battlefield under its owner's control at the beginning of your next upkeep. You lose 2 life. −1: Each opponent loses 2 life and you gain 2 life. −2: Each opponent discards a card and you draw a card.