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
Chronic Flooding 1UEnchantment — Aura Enchant land Whenever enchanted land becomes tapped, its controller mills three cards.
Tibalt's Trickery 1RInstant Counter target spell. Choose 1, 2, or 3 at random. Its controller mills that many cards, then exiles cards from the top of their library until they exile a nonland card with a different name than that spell. They may cast that card without paying its mana cost. Then they put the exiled cards on the bottom of their library in a random order.
Essence Feed 5BSorcery Target player loses 3 life. You gain 3 life and create three 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this creature: Add {C}."
Whip of Erebos 2BBLegendary Enchantment Artifact Creatures you control have lifelink. {2}{B}{B}, {T}: Return target creature card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step. If it would leave the battlefield, exile it instead of putting it anywhere else. Activate only as a sorcery.
Harvestguard Alseids 2WEnchantment Creature — Nymph Constellation — Whenever Harvestguard Alseids or another enchantment enters the battlefield under your control, prevent all damage that would be dealt to target creature this turn. 2/3
Utopia Vow 1GEnchantment — Aura Enchant creature Enchanted creature can't attack or block. Enchanted creature has "{T}: Add one mana of any color."
Artifact Possession 2BEnchantment — Aura Enchant artifact Whenever enchanted artifact becomes tapped or a player activates an ability of enchanted artifact without {T} in its activation cost, Artifact Possession deals 2 damage to that artifact's controller.
Agrus Kos, Eternal Soldier 3WLegendary Creature — Spirit Soldier Vigilance Whenever Agrus Kos, Eternal Soldier becomes the target of an ability that targets only it, you may pay {1}{R/W}. If you do, copy that ability for each other creature you control that ability could target. Each copy targets a different one of those creatures. ({R/W} can be paid with either {R} or {W}.) 3/4
Genju of the Spires REnchantment — Aura Enchant Mountain {2}: Enchanted Mountain becomes a 6/1 red Spirit creature until end of turn. It's still a land. When enchanted Mountain is put into a graveyard, you may return Genju of the Spires from your graveyard to your hand.
Tormentor's Helm RArtifact — Equipment Equipped creature gets +1/+1. Whenever equipped creature becomes blocked, it deals 1 damage to defending player. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
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