Name: Stinging Study Cost: 4B CMC: 5 Color: B CID: B Type: Instant Rules Text: You draw X cards and you lose X life, where X is the mana value of a commander you own on the battlefield or in the command zone. Set/Rarity: Magic Online Promos rare, Secret Lair Drop rare, Commander 2021 rare Legality: Legal in oathbreaker, Legal in vintage, Legal in legacy, Legal in duel, Legal in commander Price: $7.12