Card Codex

M:tG card similarity search

17 May 2024: Card library updated.

Horizon Stone

5 · Artifact

If you would lose unspent mana, that mana becomes colorless instead.

Similar cards

Color identity:
NameManaTypeText
Passionate Archaeologist 1RLegendary Enchantment — Background Commander creatures you own have "Whenever you cast a spell from exile, this creature deals damage equal to that spell's mana value to target opponent."
Meeting of the Five 3WUBRGSorcery Exile the top ten cards of your library. You may cast spells with exactly three colors from among them this turn. Add {W}{W}{U}{U}{B}{B}{R}{R}{G}{G}. Spend this mana only to cast spells with exactly three colors.
Crypt Ghast 3BCreature — Spirit Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) Whenever you tap a Swamp for mana, add an additional {B}. 2/2
Accelerated Mutation 3GGInstant Target creature gets +X/+X until end of turn, where X is the highest mana value among permanents you control.
Guard Dogs 3WCreature — Dog {2}{W}, {T}: Choose a permanent you control. Prevent all combat damage target creature would deal this turn if it shares a color with that permanent. 2/2
Bandit's Haul 3Artifact Whenever you commit a crime, put a loot counter on Bandit's Haul. This ability triggers only once each turn. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.) {T}: Add one mana of any color. {2}, {T}, Remove two loot counters from Bandit's Haul: Draw a card.
Terashi's Grasp 2WSorcery — Arcane Destroy target artifact or enchantment. You gain life equal to its mana value.
Mirror Strike 3WInstant All combat damage that would be dealt to you this turn by target unblocked creature is dealt to its controller instead.
Hidden Herd GEnchantment When an opponent plays a nonbasic land, if Hidden Herd is an enchantment, Hidden Herd becomes a 3/3 Beast creature.
Haze Frog 3GGCreature — Frog Flash (You may cast this spell any time you could cast an instant.) When Haze Frog enters the battlefield, prevent all combat damage that other creatures would deal this turn. 2/1
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