Strixhaven: School of Mages · #84
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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.)
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Professor's Warning (STX 84, foil) is a black instant from Strixhaven: School of Mages. It lets you choose to either put a +1/+1 counter on a creature or give a creature indestructible until end of turn. The card's cheap single-mana cost makes it a flexible trick for protecting or growing creatures in aggressive and midrange strategies.
Catalog pricing data as of 5 May 2026, 14:19
