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
Sword of Once and Future 3Artifact — Equipment Equipped creature gets +2/+2 and has protection from blue and from black. Whenever equipped creature deals combat damage to a player, surveil 2. Then you may cast an instant or sorcery spell with mana value 2 or less from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead. Equip {2}
Yurlok of Scorch Thrash 1BRGLegendary Creature — Viashino Shaman Vigilance A player losing unspent mana causes that player to lose that much life. {1}, {T}: Each player adds {B}{R}{G}. 4/4
Fountain of Ichor 3Artifact {T}: Add one mana of any color. {3}: Fountain of Ichor becomes a 3/3 Dinosaur artifact creature until end of turn.
Celestial Dawn 1WWEnchantment Lands you control are Plains. Nonland permanents you control are white. The same is true for spells you control and nonland cards you own that aren't on the battlefield. You may spend white mana as though it were mana of any color. You may spend other mana only as though it were colorless mana.
Gilanra, Caller of Wirewood 2GLegendary Creature — Elf Druid {T}: Add {G}. When you spend this mana to cast a spell with mana value 6 or greater, draw a card. Partner (You can have two commanders if both have partner.) 1/2
Food Chain 2GEnchantment Exile a creature you control: Add X mana of any one color, where X is 1 plus the exiled creature's mana value. Spend this mana only to cast creature spells.
Arcane Heist 2UUSorcery You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. If that spell would be put into their graveyard, exile it instead. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)
Forger's Foundry 2UArtifact {T}: Add {U}. When you spend this mana to cast an instant or sorcery spell with mana value 3 or less, you may exile that spell instead of putting it into its owner's graveyard as it resolves. {3}{U}{U}, {T}: You may cast any number of spells from among cards exiled with Forger's Foundry without paying their mana costs. Activate only as a sorcery.
Phyrexian Atlas 3Artifact {T}: Add one mana of any color. Corrupted — Whenever Phyrexian Atlas becomes tapped, each opponent who has three or more poison counters loses 1 life.
Sram's Expertise 2WWSorcery Create three 1/1 colorless Servo artifact creature tokens. You may cast a spell with mana value 3 or less from your hand without paying its mana cost.
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