Card Codex

M:tG card similarity search

17 May 2024: Card library updated.

Professor's Warning

B · Instant

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.)

Similar cards

Color identity:
NameManaTypeText
Keen Glidemaster 1UCreature — Human Soldier {2}{U}: Target creature gains flying until end of turn. 2/1
Greenbelt Radical 3GCreature — Centaur Citizen Disguise {5}{G}{G} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When Greenbelt Radical is turned face up, put a +1/+1 counter on each creature you control. Creatures you control gain trample until end of turn. 4/4
Guardian Shield-Bearer 1GCreature — Human Soldier Megamorph {3}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When Guardian Shield-Bearer is turned face up, put a +1/+1 counter on another target creature you control. 2/1
Sample Collector 2GCreature — Troll Detective Whenever Sample Collector attacks, you may collect evidence 3. When you do, put a +1/+1 counter on target creature you control. (To collect evidence 3, exile cards with total mana value 3 or greater from your graveyard.) 2/3
First Day of Class 1RInstant Whenever a creature enters the battlefield under your control this turn, put a +1/+1 counter on it and it gains haste until end of turn. Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)
Explosive Entry 1RSorcery Destroy up to one target artifact. Put a +1/+1 counter on up to one target creature.
Ley Line 3GEnchantment At the beginning of each player's upkeep, that player may put a +1/+1 counter on target creature of their choice.
Revelation of Power 1WInstant Target creature gets +2/+2 until end of turn. If it has a counter on it, it also gains flying and lifelink until end of turn.
Indulgent Aristocrat BCreature — Vampire Noble Lifelink {2}, Sacrifice a creature: Put a +1/+1 counter on each Vampire you control. 1/1
Life Matrix 4Artifact {4}, {T}: Put a matrix counter on target creature and that creature gains "Remove a matrix counter from this creature: Regenerate this creature." Activate only during your upkeep.
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