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
Rakdos Charm BRInstant Choose one — • Exile target player's graveyard. • Destroy target artifact. • Each creature deals 1 damage to its controller.
Farewell 4WWSorcery Choose one or more — • Exile all artifacts. • Exile all creatures. • Exile all enchantments. • Exile all graveyards.
Cryptic Command 1UUUInstant Choose two — • Counter target spell. • Return target permanent to its owner's hand. • Tap all creatures your opponents control. • Draw a card.
Invasion of Fiora 4BBBattle — Siege (As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When Invasion of Fiora enters the battlefield, choose one or both — • Destroy all legendary creatures. • Destroy all nonlegendary creatures.
Betrayal of Flesh 5BInstant Choose one — • Destroy target creature. • Return target creature card from your graveyard to the battlefield. Entwine—Sacrifice three lands. (Choose both if you pay the entwine cost.)
Merciless Eviction 4WBSorcery Choose one — • Exile all artifacts. • Exile all creatures. • Exile all enchantments. • Exile all planeswalkers.
Collective Effort 1WWSorcery Escalate—Tap an untapped creature you control. (Pay this cost for each mode chosen beyond the first.) Choose one or more — • Destroy target creature with power 4 or greater. • Destroy target enchantment. • Put a +1/+1 counter on each creature target player controls.
Artistic Refusal 4UUInstant Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Choose one or both — • Counter target spell. • Draw two cards, then discard a card.
Archmage's Charm UUUInstant Choose one — • Counter target spell. • Target player draws two cards. • Gain control of target nonland permanent with mana value 1 or less.
Treva's Charm GWUInstant Choose one — • Destroy target enchantment. • Exile target attacking creature. • Draw a card, then discard a card.
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