Name: Professor's Warning Cost: B CMC: 1 Color: B CID: B Type: Instant Rules Text: Choose one -- - Put a +1/+1 counter on target creature. - Target creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) Set/Rarity: Strixhaven: School of Mages common Set Code: STX-C Legality: Legal in gladiator, Legal in historic, Legal in vintage, Legal in brawl, Legal in pioneer, Legal in competitivebrawl, Legal in commander, Legal in duel, Legal in timeless, Legal in pauper, Legal in paupercommander, Legal in modern, Legal in legacy, Legal in oathbreaker Price: $0.30 Foil price: $0.27