Name: Professor Onyx Cost: 4BB CMC: 6 Color: B CID: B Type: Legendary Planeswalker -- Liliana Loyalty: 5 Rules Text: Magecraft -- Whenever you cast or copy an instant or sorcery spell, each opponent loses 2 life and you gain 2 life. [+1]: You lose 1 life. Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard. [−3]: Each opponent sacrifices a creature with the greatest power among creatures that player controls. [−8]: Each opponent may discard a card. If they don't, they lose 3 life. Repeat this process six more times. Set/Rarity: Magic Online Promos mythic, Strixhaven: School of Mages Promos mythic, Strixhaven: School of Mages mythic, Duskmourn: House of Horror Commander mythic Set Code: PRM-M, PSTX-M, STX-M, DSC-M Legality: Legal in vintage, Legal in competitivebrawl, Legal in pioneer, Legal in brawl, Legal in gladiator, Legal in historic, Legal in oathbreaker, Legal in legacy, Legal in commander, Legal in timeless, Legal in duel, Legal in modern Price: $4.79 Foil price: $6.40