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
Shadows' Verdict 3BBSorcery Exile all creatures and planeswalkers with mana value 3 or less from the battlefield and all creature and planeswalker cards with mana value 3 or less from all graveyards.
Accomplished Alchemist 3GCreature — Elf Druid {T}: Add one mana of any color. {T}: Add X mana of any one color, where X is the amount of life you gained this turn. 2/5
Sarevok's Tome 4Artifact When Sarevok's Tome enters the battlefield, you take the initiative. {T}: Add {C}. If you have the initiative, add {C}{C} instead. {3}, {T}: Exile cards from the top of your library until you exile a nonland card. You may cast that card without paying its mana cost. Activate only if you've completed a dungeon.
A-Fires of Invention 4REnchantment You can cast spells only during your turn and you can cast no more than two spells each turn. You may cast spells with mana value less than or equal to the number of lands you control without paying their mana costs.
Fires of Invention 3REnchantment You can cast spells only during your turn and you can cast no more than two spells each turn. You may cast spells with mana value less than or equal to the number of lands you control without paying their mana costs.
Inherited Envelope 3Artifact When Inherited Envelope enters the battlefield, the Ring tempts you. {T}: Add one mana of any color.
Bösium Strip 3Artifact {3}, {T}: Until end of turn, you may cast instant and sorcery spells from the top of your graveyard. If a spell cast this way would be put into a graveyard, exile it instead.
Karlach, Tiefling Spellrager 1URLegendary Creature — Tiefling Barbarian First strike, haste When this card specializes from your graveyard, return it from your graveyard to the battlefield. It perpetually gains "This creature can't block." When this card specializes from any zone, seek an instant or sorcery card with mana value 3 or less. Until end of turn, you may cast that card without paying its mana cost. 4/4
Laboratory Maniac 2UCreature — Human Wizard If you would draw a card while your library has no cards in it, you win the game instead. 2/2
Nantuko Slicer 2GGCreature — Insect Kicker {B} When Nantuko Slicer enters the battlefield, return target card from your graveyard to your hand. If this spell was kicked, conjure a duplicate of target card in an opponent's graveyard into your hand. It perpetually gains "You may spend mana as though it were mana of any color to cast this spell." 3/2
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