Teysa, Orzhov Scion is a rare Legendary Creature — Human Advisor card from Guildpact (GPT), collector number 134. Current market price: $3.19 (foil $36.80), TCGplayer market prices via Scryfall.
Sacrifice three white creatures: Exile target creature. Whenever another black creature you control dies, create a 1/1 white Spirit creature token with flying.