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
Lozhan, Dragons' Legacy 3URLegendary Creature — Dragon Shaman Flying Whenever you cast an Adventure or Dragon spell, Lozhan, Dragons' Legacy deals damage equal to that spell's mana value to any target that isn't a commander. 4/2
Balduvian Atrocity 2BCreature — Phyrexian Berserker Kicker {R} (You may pay an additional {R} as you cast this spell.) Menace When Balduvian Atrocity enters the battlefield, if it was kicked, return target creature card with mana value 3 or less from your graveyard to the battlefield. It gains haste. Sacrifice it at the beginning of the next end step. 2/3
Fallaji Wayfarer 2GCreature — Human Scout Fallaji Wayfarer is all colors. This ability doesn't affect its color identity. (It can be in any deck whose commander's color identity includes green.) Multicolored spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting a multicolored spell pays for {1} or one mana of a color that creature is.) 2/4
Everybody Lives! 1WInstant All creatures gain hexproof and indestructible until end of turn. Players gain hexproof until end of turn. Players can't lose life this turn and players can't lose the game or win the game this turn.
Scars of the Veteran 4WInstant You may exile a white card from your hand rather than pay this spell's mana cost. Prevent the next 7 damage that would be dealt to any target this turn. If it's a creature, put a +0/+1 counter on it for each 1 damage prevented this way at the beginning of the next end step.
Harsh Mentor 1RCreature — Human Cleric Whenever an opponent activates an ability of an artifact, creature, or land on the battlefield, if it isn't a mana ability, Harsh Mentor deals 2 damage to that player. 2/2
Convulsing Licid 2RCreature — Licid {R}, {T}: Convulsing Licid loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay {R} to end this effect. Enchanted creature can't block. 2/2
Seek Bolas's Counsel UBRSorcery Choose one at random — • You get an emblem with "At the beginning of your upkeep, pay {U}{B}{R}. If you don't, you lose the game." • Each player discards their hand. • Planeswalk to Pools of Becoming. (Once there, you can roll the planar die only if you're playing Planechase.) • For each opponent, exile cards from the top of their library until you exile a nonland card. You may cast those cards without paying their mana costs. • Destroy all creatures and non-Bolas planeswalkers. • You get an emblem with "You can cast nonland cards from your sideboard."
Bounteous Kirin 5GGLegendary Creature — Kirin Spirit Flying Whenever you cast a Spirit or Arcane spell, you may gain life equal to that spell's mana value. 4/4
Exert Influence 4USorcery Converge — Gain control of target creature if its power is less than or equal to the number of colors of mana spent to cast this spell.
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