Kaya, Orzhov Usurper is a mythic Legendary Planeswalker — Kaya card from Ravnica Allegiance Promos (PRNA), collector number 186p. Current market price: $0.73 (foil $1.01), TCGplayer market prices via Scryfall.
+1: Exile up to two target cards from a single graveyard. You gain 2 life if at least one creature card was exiled this way. −1: Exile target nonland permanent with mana value 1 or less. −5: Kaya deals damage to target player equal to the number of cards that player owns in exile and you gain that much life.