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
Cactus Preserve Land — Desert Cactus Preserve enters the battlefield tapped. {T}: Add one mana of any type that a land you control could produce. {3}: Until end of turn, Cactus Preserve becomes an X/X green Plant creature with reach, where X is the greatest mana value among your commanders. It's still a land.
Sins of the Past 4BBSorcery Until end of turn, you may cast target instant or sorcery card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead. Exile Sins of the Past.
The Doctor's Tomb Plane — Trenzalore If a creature would die, instead exile it and that creature's controller loses 2 life. Whenever chaos ensues, redistribute any number of players' life totals. (Each of those players gets one life total back.)
Elemental Resonance 2GGEnchantment — Aura Enchant permanent At the beginning of your precombat main phase, add mana equal to enchanted permanent's mana cost. (Mana cost includes color. If a mana symbol has multiple colors, choose one.)
Jeweled Lotus 0Artifact {T}, Sacrifice Jeweled Lotus: Add three mana of any one color. Spend this mana only to cast your commander.
One with Death BInstant You lose the game.
The Ruinous Powers 2BREnchantment At the beginning of your upkeep, choose an opponent at random. Exile the top card of that player's library. Until end of turn, you may play that card and you may spend mana as though it were mana of any color to cast it. When you cast a spell this way, its owner loses life equal to its mana value.
Smokebraider 1RCreature — Elemental Shaman {T}: Add two mana in any combination of colors. Spend this mana only to cast Elemental spells or activate abilities of Elementals. 1/1
Squid Fire Knight Stickers {TK}{TK} — {T}: The next time target player would roll one or more dice this turn, instead they roll that many dice plus one, then you choose one of those rolls to ignore. {TK}{TK}{TK} — Protection from odd mana values {TK}{TK} — 4/1 {TK}{TK}{TK}{TK} — 6/6
Ugin's Nexus 5Legendary Artifact If a player would begin an extra turn, that player skips that turn instead. If Ugin's Nexus would be put into a graveyard from the battlefield, instead exile it and take an extra turn after this one.
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