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
Brinelin, the Moon Kraken 6UULegendary Creature — Kraken When Brinelin, the Moon Kraken enters the battlefield or whenever you cast a spell with mana value 6 or greater, you may return target nonland permanent to its owner's hand. Partner (You can have two commanders if both have partner.) 6/8
Sanctum of Ugin Land {T}: Add {C}. Whenever you cast a colorless spell with mana value 7 or greater, you may sacrifice Sanctum of Ugin. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle.
Dragon's Hoard 3Artifact Whenever a Dragon enters the battlefield under your control, put a gold counter on Dragon's Hoard. {T}, Remove a gold counter from Dragon's Hoard: Draw a card. {T}: Add one mana of any color.
Necrogen Scudder 2BCreature — Phyrexian Horror Flying When Necrogen Scudder enters the battlefield, you lose 3 life. 3/3
Flawless Forgery 3UUSorcery Casualty 3 (As you cast this spell, you may sacrifice a creature with power 3 or greater. When you do, copy this spell and you may choose a new target for the copy.) Exile target instant or sorcery card from an opponent's graveyard. Copy that card. You may cast the copy without paying its mana cost.
Jamie McCrimmon 2GLegendary Creature — Human Warrior Trample Whenever you cast a historic spell, Jamie McCrimmon gets +X/+X until end of turn, where X is that spell's mana value. (Artifacts, legendaries, and Sagas are historic.) Doctor's companion (You can have two commanders if the other is the Doctor.) 2/2
Cemetery Tampering 2BEnchantment Hideaway 5 (When this enchantment enters the battlefield, look at the top five cards of your library, exile one face down, then put the rest on the bottom in a random order.) At the beginning of your upkeep, you may mill three cards. Then if there are twenty or more cards in your graveyard, you may play the exiled card without paying its mana cost.
Ramses, Assassin Lord 2UBLegendary Creature — Human Assassin Deathtouch Other Assassins you control get +1/+1. Whenever a player loses the game, if they were attacked this turn by an Assassin you controlled, you win the game. 4/4
Dimir Keyrune 3Artifact {T}: Add {U} or {B}. {U}{B}: Dimir Keyrune becomes a 2/2 blue and black Horror artifact creature until end of turn and can't be blocked this turn.
Tolaria Legendary Land {T}: Add {U}. {T}: Target creature loses banding and all "bands with other" abilities until end of turn. Activate only during any upkeep step.
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