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
Court of Ambition 2BBEnchantment When Court of Ambition enters the battlefield, you become the monarch. At the beginning of your upkeep, each opponent loses 3 life unless they discard a card. If you're the monarch, instead each opponent loses 6 life unless they discard two cards.
Mistcaller UCreature — Merfolk Wizard Sacrifice Mistcaller: Until end of turn, if a nontoken creature would enter the battlefield and it wasn't cast, exile it instead. 1/1
Ageless Sentinels 3WCreature — Wall Defender (This creature can't attack.) Flying When Ageless Sentinels blocks, it becomes a Bird Giant, and it loses defender. (It's no longer a Wall. This effect lasts indefinitely.) 4/4
Rathi Fiend 3BCreature — Phyrexian Horror Mercenary When Rathi Fiend enters the battlefield, each player loses 3 life. {3}, {T}: Search your library for a Mercenary permanent card with mana value 3 or less, put it onto the battlefield, then shuffle. 2/2
Taii Wakeen, Perfect Shot RWLegendary Creature — Human Mercenary Whenever a source you control deals noncombat damage to a creature equal to that creature's toughness, draw a card. {X}, {T}: If a source you control would deal noncombat damage to a permanent or player this turn, it deals that much damage plus X instead. 2/3
Yawgmoth's Agenda 3BBEnchantment You can't cast more than one spell each turn. You may play lands and cast spells from your graveyard. If a card would be put into your graveyard from anywhere, exile it instead.
Bloodthirsty Adversary 1RCreature — Vampire Haste When Bloodthirsty Adversary enters the battlefield, you may pay {2}{R} any number of times. When you pay this cost one or more times, put that many +1/+1 counters on Bloodthirsty Adversary, then exile up to that many target instant and/or sorcery cards with mana value 3 or less from your graveyard and copy them. You may cast any number of the copies without paying their mana costs. 2/2
Krark's Other Thumb 2Legendary Artifact If you would roll a die, instead roll two of those dice and ignore one of those results.
Base Camp Land Base Camp enters the battlefield tapped. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a Cleric, Rogue, Warrior, or Wizard spell or to activate an ability of a Cleric, Rogue, Warrior, or Wizard.
Phantasmal Bear UCreature — Bear Illusion When Phantasmal Bear becomes the target of a spell or ability, sacrifice it. 2/2
Page 63