Card Codex

M:tG card similarity search

17 May 2024: Card library updated.

Reverse Polarity

WW · Instant

You gain X life, where X is twice the damage dealt to you so far this turn by artifacts.

Similar cards

Color identity:
NameManaTypeText
Flameblast Dragon 4RRCreature — Dragon Flying Whenever Flameblast Dragon attacks, you may pay {X}{R}. If you do, Flameblast Dragon deals X damage to any target. 5/5
Nantuko Shrine 1GGEnchantment Whenever a player casts a spell, that player creates X 1/1 green Squirrel creature tokens, where X is the number of cards in all graveyards with the same name as that spell.
Winter Blast XGSorcery Tap X target creatures. Winter Blast deals 2 damage to each of those creatures with flying.
Spoils of Blood BInstant Create an X/X black Horror creature token, where X is the number of creatures that died this turn.
Draconic Intervention 2RRSorcery As an additional cost to cast this spell, exile an instant or sorcery card from your graveyard. Draconic Intervention deals X damage to each non-Dragon creature, where X is the exiled card's mana value. If a creature dealt damage this way would die this turn, exile it instead. Exile Draconic Intervention.
Endurance Bobblehead 3Artifact — Bobblehead {T}: Add one mana of any color. {3}, {T}: Up to X target creatures you control get +1/+0 and gain indestructible until end of turn, where X is the number of Bobbleheads you control as you activate this ability. Activate only as a sorcery.
Aura Mutation GWInstant Destroy target enchantment. Create X 1/1 green Saproling creature tokens, where X is that enchantment's mana value.
Oath of Jace 2ULegendary Enchantment When Oath of Jace enters the battlefield, draw three cards, then discard two cards. At the beginning of your upkeep, scry X, where X is the number of planeswalkers you control.
Indoraptor, the Perfect Hybrid 1B/GRLegendary Creature — Dinosaur Mutant Bloodthirst X (This creature enters the battlefield with X +1/+1 counters on it, where X is the damage dealt to your opponents this turn.) Menace Enrage — Whenever Indoraptor, the Perfect Hybrid is dealt damage, choose an opponent at random. Indoraptor deals damage equal to its power to that player unless they sacrifice a nontoken creature. 3/1
Thornmantle Striker 4BCreature — Elf Rogue When Thornmantle Striker enters the battlefield, choose one — • Remove X counters from target permanent, where X is the number of Elves you control. • Target creature an opponent controls gets -X/-X until end of turn, where X is the number of Elves you control. 4/3
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