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
Wall of Vapor 3UCreature — Wall Defender (This creature can't attack.) Prevent all damage that would be dealt to Wall of Vapor by creatures it's blocking. 0/1
Archive Trap 3UUInstant — Trap If an opponent searched their library this turn, you may pay {0} rather than pay this spell's mana cost. Target opponent mills thirteen cards.
Mnemonic Deluge 6UUUSorcery Exile target instant or sorcery card from a graveyard. Copy that card three times. You may cast the copies without paying their mana costs. Exile Mnemonic Deluge.
Magnanimous Magistrate 5WCreature — Human Advisor Magnanimous Magistrate enters the battlefield with five reprieve counters on it. Whenever another nontoken creature you control dies, if its mana value was 1 or greater, you may remove that many reprieve counters from Magnanimous Magistrate. If you do, return that card to the battlefield under its owner's control. 3/4
Gideon's Sacrifice WInstant Choose a creature or planeswalker you control. All damage that would be dealt this turn to you and permanents you control is dealt to the chosen permanent instead (if it's still on the battlefield).
Llanowar Greenwidow 2GCreature — Spider Reach, trample Domain — {7}{G}: Return Llanowar Greenwidow from your graveyard to the battlefield tapped. It gains "If this permanent would leave the battlefield, exile it instead of putting it anywhere else." This ability costs {1} less to activate for each basic land type among lands you control. 4/3
Endrek Sahr, Master Breeder 4BLegendary Creature — Human Wizard Whenever you cast a creature spell, create X 1/1 black Thrull creature tokens, where X is that spell's mana value. When you control seven or more Thrulls, sacrifice Endrek Sahr, Master Breeder. 2/2
Prism Array 4UEnchantment Converge — Prism Array enters the battlefield with a crystal counter on it for each color of mana spent to cast it. Remove a crystal counter from Prism Array: Tap target creature. {W}{U}{B}{R}{G}: Scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)
Nightdrinker Moroii 3BCreature — Vampire Flying When Nightdrinker Moroii enters the battlefield, you lose 3 life. Disguise {B}{B} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) 4/2
Allure of the Unknown 3BRSorcery Reveal the top six cards of your library. An opponent exiles a nonland card from among them, then you put the rest into your hand. That opponent may cast the exiled card without paying its mana cost.
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