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
Pulse of Llanowar 3GEnchantment If a basic land you control is tapped for mana, it produces mana of a color of your choice instead of any other type.
Primeval Spawn 5WUBRGCreature — Avatar If Primeval Spawn would enter the battlefield and it wasn't cast or no mana was spent to cast it, exile it instead. Vigilance, trample, lifelink When Primeval Spawn leaves the battlefield, exile the top ten cards of your library. You may cast any number of spells with total mana value 10 or less from among them without paying their mana costs. 10/10
Sunglasses of Urza 3Artifact You may spend white mana as though it were red mana.
Phial of Galadriel 3Legendary Artifact If you would draw a card while you have no cards in hand, draw two cards instead. If you would gain life while you have 5 or less life, you gain twice that much life instead. {T}: Add one mana of any color.
Rain of Gore BREnchantment If a spell or ability would cause its controller to gain life, that player loses that much life instead.
Krark's Thumb 2Legendary Artifact If you would flip a coin, instead flip two coins and ignore one.
North Star 4Artifact {4}, {T}: For one spell this turn, you may spend mana as though it were mana of any type to pay that spell's mana cost. (Additional costs are still paid normally.)
Illusionary Mask 2Artifact {X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2/2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned face up and assigns or deals damage, is dealt damage, or becomes tapped. Activate only as a sorcery.
The Mycosynth Gardens Land — Sphere {T}: Add {C}. {1}, {T}: Add one mana of any color. {X}, {T}: The Mycosynth Gardens becomes a copy of target nontoken artifact you control with mana value X.
Dreadhorde Arcanist 1RCreature — Zombie Wizard Trample Whenever Dreadhorde Arcanist attacks, you may cast target instant or sorcery card with mana value less than or equal to Dreadhorde Arcanist's power from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead. 1/3
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