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
Unctus's Retrofitter 2UCreature — Phyrexian Artificer Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) When Unctus's Retrofitter enters the battlefield, up to one target artifact you control becomes an artifact creature with base power and toughness 4/4 for as long as Unctus's Retrofitter remains on the battlefield. 2/3
Hellcarver Demon 3BBBCreature — Demon Flying Whenever Hellcarver Demon deals combat damage to a player, sacrifice all other permanents you control and discard your hand. Exile the top six cards of your library. You may cast any number of spells from among cards exiled this way without paying their mana costs. 6/6
Clutch of the Undercity 1UUBInstant Return target permanent to its owner's hand. Its controller loses 3 life. Transmute {1}{U}{B} ({1}{U}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
Uncage the Menagerie XGGSorcery Search your library for up to X creature cards with different names that each have mana value X, reveal them, put them into your hand, then shuffle.
Flamethrower Sonata 1RSorcery Discard a card, then draw a card. When you discard an instant or sorcery card this way, Flamethrower Sonata deals damage equal to that card's mana value to target creature or planeswalker you don't control.
Tameshi, Reality Architect 2ULegendary Creature — Moonfolk Wizard Whenever one or more noncreature permanents are returned to hand, draw a card. This ability triggers only once each turn. {X}{W}, Return a land you control to its owner's hand: Return target artifact or enchantment card with mana value X or less from your graveyard to the battlefield. Activate only as a sorcery. 2/3
Knight of the Holy Nimbus WWCreature — Human Rebel Knight Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) If Knight of the Holy Nimbus would be destroyed, regenerate it. (Tap it, remove it from combat, and heal all damage on it.) {2}: Knight of the Holy Nimbus can't be regenerated this turn. Only your opponents may activate this ability. 2/2
Barracks of the Thousand Legendary Artifact Land (Transforms from Thousand Moons Smithy.) {T}: Add {W}. Whenever you cast an artifact or creature spell using mana produced by Barracks of the Thousand, create a white Gnome Soldier artifact creature token with "This creature's power and toughness are each equal to the number of artifacts and/or creatures you control."
Flame Spill 2RInstant Flame Spill deals 4 damage to target creature. Excess damage is dealt to that creature's controller instead.
Pigment Storm 3RRSorcery Pigment Storm deals 5 damage to target creature. Excess damage is dealt to that creature's controller instead.
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