Kethis, the Hidden Hand (Core Set 2020)

Legendary spells you cast cost {1} less to cast. Exile two legendary cards from your graveyard: Until end of turn, each legendary card in your graveyard gains "You may play this card from your graveyard."

NM - $4.00
LP - $3.00
MP - $2.50
HP - $2.00
DMG - $2.00