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
Yusri, Fortune's Flame 1URLegendary Creature — Efreet Flying Whenever Yusri, Fortune's Flame attacks, choose a number between 1 and 5. Flip that many coins. For each flip you win, draw a card. For each flip you lose, Yusri deals 2 damage to you. If you won five flips this way, you may cast spells from your hand this turn without paying their mana costs. 2/3
Smite the Deathless 1RInstant Smite the Deathless deals 3 damage to target creature. That creature loses indestructible until end of turn. If that creature would die this turn, exile it instead.
Idol of Endurance 2WArtifact When Idol of Endurance enters the battlefield, exile all creature cards with mana value 3 or less from your graveyard until Idol of Endurance leaves the battlefield. {1}{W}, {T}: Until end of turn, you may cast a creature spell from among cards exiled with Idol of Endurance without paying its mana cost.
Grand Warlord Radha 2RGLegendary Creature — Elf Warrior Haste Whenever one or more creatures you control attack, add that much mana in any combination of {R} and/or {G}. Until end of turn, you don't lose this mana as steps and phases end. 3/4
Byode, Inverse Sun 2UBLegendary Universewalker — Byode +2: Mill three cards, then return any number of cards from different Universes milled this way from your graveyard to your hand. -X: Choose a Universe you haven't chosen this way this game. You may cast a spell from that Universe with mana value X or less from your hand without paying its mana cost. Byode, Inverse Sun can be your commander. Your deck can include Universes Beyond cards of any color identity.
Fertile Ground 1GEnchantment — Aura Enchant land Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.
Blind Fury 2RRInstant All creatures lose trample until end of turn. If a creature would deal combat damage to a creature this turn, it deals double that damage to that creature instead.
Brainstealer Dragon 5BBCreature — Dragon Horror Flying At the beginning of your end step, exile the top card of each opponent's library. You may play those cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it. Whenever a nonland permanent an opponent owns enters the battlefield under your control, they lose life equal to its mana value. 6/6
Vadrok, Apex of Thunder URWLegendary Creature — Elemental Dinosaur Cat Mutate {1}{W/U}{R}{R} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Flying, first strike Whenever this creature mutates, you may cast target noncreature card with mana value 3 or less from your graveyard without paying its mana cost. 3/3
Dryad Militant G/WCreature — Dryad Soldier If an instant or sorcery card would be put into a graveyard from anywhere, exile it instead. 2/1
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