Name: Professor's Warning
Brand: Magic: The Gathering
Availability: InStock
Author: Kieran Yanner

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                  Mana1
                  
Professor's WarningStrixhaven: School of Mages

                #84
                Instant
              
TCGplayer
ConditionMarketLow
Near Mint$0.30$1.58
Lightly Played$0.13$1.59
Moderately Played$0.21$1.64
Heavily Played—$1.69
Damaged—$2.99
Snapshot as of 2026-10-27. Live prices & recent sales load below.
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Card details
          
          Mana cost1
          
          SetStrixhaven: School of Mages
          Number84
          RarityInstant
          Released2021-04-23
        Oracle textChoose 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.)
Illustrated by Kieran Yanner

        Flavor
        Professor Onyx urged the twins to prepare for the dark mage Extus, sounding very much like someone familar with the rise of tyrants.
      
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Professor's Warning

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More by Kieran Yanner ↗

Condition	Market	Low
Near Mint	$0.30	$1.58
Lightly Played	$0.13	$1.59
Moderately Played	$0.21	$1.64
Heavily Played	—	$1.69
Damaged	—	$2.99