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
Fractured Loyalty 1REnchantment — Aura Enchant creature Whenever enchanted creature becomes the target of a spell or ability, that spell or ability's controller gains control of that creature. (This effect lasts indefinitely.)
Elven Chorus 3GEnchantment You may look at the top card of your library any time. You may cast creature spells from the top of your library. Creatures you control have "{T}: Add one mana of any color."
Ixhel, Scion of Atraxa 1WBGLegendary Creature — Phyrexian Angel Flying, vigilance, toxic 2 Corrupted — At the beginning of your end step, each opponent who has three or more poison counters exiles the top card of their library face down. You may look at and play those cards for as long as they remain exiled, and you may spend mana as though it were mana of any color to cast those spells. 2/5
Extinguish the Light 2BBInstant Destroy target creature or planeswalker. If its mana value was 3 or less, you gain 3 life.
Neheb, Dreadhorde Champion 2RRLegendary Creature — Zombie Minotaur Warrior Trample Whenever Neheb, Dreadhorde Champion deals combat damage to a player or planeswalker, you may discard any number of cards. If you do, draw that many cards and add that much {R}. Until end of turn, you don't lose this mana as steps and phases end. 5/4
Ancient Cornucopia 2GArtifact Whenever you cast a spell that's one or more colors, you may gain 1 life for each of that spell's colors. Do this only once each turn. {T}: Add one mana of any color.
Atalya, Samite Master 3WWLegendary Creature — Human Cleric {X}, {T}: Choose one — • Prevent the next X damage that would be dealt to target creature this turn. Spend only white mana on X. • You gain X life. Spend only white mana on X. 2/3
Shelldock Isle Land Hideaway 4 (When this land enters the battlefield, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.) Shelldock Isle enters the battlefield tapped. {T}: Add {U}. {U}, {T}: You may play the exiled card without paying its mana cost if a library has twenty or fewer cards in it.
Worldfire 6RRRSorcery Exile all permanents. Exile all cards from all hands and graveyards. Each player's life total becomes 1.
Necromancer's Magemark 2BEnchantment — Aura Enchant creature Creatures you control that are enchanted get +1/+1. If a creature you control that's enchanted would die, return it to its owner's hand instead.
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