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
Tocasia's Welcome 2WEnchantment Whenever one or more creatures with mana value 3 or less enter the battlefield under your control, draw a card. This ability triggers only once each turn.
Easy Prey 1BInstant Destroy target creature with mana value 2 or less. Cycling {2} ({2}, Discard this card: Draw a card.)
Rashmi and Ragavan 1GURLegendary Creature — Elf Monkey Whenever you cast your first spell during each of your turns, exile the top card of target opponent's library and create a Treasure token. Then you may cast the exiled card without paying its mana cost if it's a spell with mana value less than the number of artifacts you control. If you don't cast it this way, you may cast it this turn. 2/4
Court of Locthwain 2BBEnchantment When Court of Locthwain enters the battlefield, you become the monarch. At the beginning of your upkeep, exile the top card of target opponent's library. You may play that card for as long as it remains exiled, and mana of any type can be spent to cast it. If you're the monarch, until end of turn, you may cast a spell from among cards exiled with Court of Locthwain without paying its mana cost.
Force of Negation 1UUInstant If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost. Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
Signature Spells 4UUEnchantment When Signature Spells enters the battlefield, seek two instant and/or sorcery cards with mana value 3, then exile them. At the beginning of your upkeep, you may copy a card exiled with Signature Spells. You may cast the copy without paying its mana cost.
Pillar of Origins 2Artifact As Pillar of Origins enters the battlefield, choose a creature type. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.
Intervention Pact 0Instant The next time a source of your choice would deal damage to you this turn, prevent that damage. You gain life equal to the damage prevented this way. At the beginning of your next upkeep, pay {1}{W}{W}. If you don't, you lose the game.
Faunsbane Troll 2BGCreature — Troll When Faunsbane Troll enters the battlefield, create a Monster Role token attached to it. (Enchanted creature gets +1/+1 and has trample.) {1}, Sacrifice an Aura attached to Faunsbane Troll: Faunsbane Troll fights target creature you don't control. If that creature would die this turn, exile it instead. Activate only as a sorcery. 4/4
Feed the Cauldron 2BInstant Destroy target creature with mana value 3 or less. If it's your turn, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")
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