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
Blade of Shared Souls 2UArtifact — Equipment For Mirrodin! (When this Equipment enters the battlefield, create a 2/2 red Rebel creature token, then attach this to it.) Whenever Blade of Shared Souls becomes attached to a creature, for as long as Blade of Shared Souls remains attached to it, you may have that creature become a copy of another target creature you control. Equip {2}
Spikefield Hazard RInstant Spikefield Hazard deals 1 damage to any target. If a permanent dealt damage this way would die this turn, exile it instead.
Conclave Mentor GWCreature — Centaur Cleric If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on that creature instead. When Conclave Mentor dies, you gain life equal to its power. 2/2
Shared Trauma BSorcery Join forces — Starting with you, each player may pay any amount of mana. Each player mills X cards, where X is the total amount of mana paid this way.
Submerge 4UInstant If an opponent controls a Forest and you control an Island, you may cast this spell without paying its mana cost. Put target creature on top of its owner's library.
The Eighth Doctor 4WULegendary Creature — Time Lord Doctor When The Eighth Doctor enters the battlefield, mill three cards. Once during each of your turns, you may play a historic land or cast a historic permanent spell from your graveyard. If you do, it gains "If this permanent would leave the battlefield, exile it instead of putting it anywhere else." 4/4
Tidal Visionary UCreature — Merfolk Wizard {T}: Target creature becomes the color of your choice until end of turn. 1/1
Hedron-Field Purists 2WCreature — Human Cleric Level up {2}{W} ({2}{W}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-4 1/4 If a source would deal damage to you or a creature you control, prevent 1 of that damage. LEVEL 5+ 2/5 If a source would deal damage to you or a creature you control, prevent 2 of that damage. 0/3
Jetmir's Fixer RGCreature — Cat Warrior {R}{G}: Jetmir's Fixer gets +1/+1 until end of turn. If mana from a Treasure was spent to activate this ability, put a +1/+1 counter on Jetmir's Fixer instead. 2/2
Providence 5WWSorcery You may reveal this card from your opening hand. If you do, at the beginning of the first upkeep, your life total becomes 26. Your life total becomes 26.
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