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
Hit the Mother Lode 4RRRSorcery Discover 10. If the discovered card's mana value is less than 10, create a number of tapped Treasure tokens equal to the difference. (To discover 10, exile cards from the top of your library until you exile a nonland card with mana value 10 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)
Hand of Emrakul 9Creature — Eldrazi You may sacrifice four Eldrazi Spawn rather than pay this spell's mana cost. Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent.) 7/7
Sydri, Galvanic Genius WUBLegendary Creature — Human Artificer {U}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn. {W}{B}: Target artifact creature gains deathtouch and lifelink until end of turn. 2/2
The Great Work Enchantment — Saga (As this Saga enters and after your draw step, add a lore counter.) I — The Great Work deals 3 damage to target opponent and each creature they control. II — Create three Treasure tokens. III — Until end of turn, you may cast instant and sorcery spells from any graveyard. If a spell cast this way would be put into a graveyard, exile it instead. Exile The Great Work, then return it to the battlefield (front face up).
Spectral Searchlight 3Artifact {T}: Choose a player. That player adds one mana of any color they choose.
Protection of the Hekma 4WEnchantment If a source an opponent controls would deal damage to you, prevent 1 of that damage.
Birchlore Rangers GCreature — Elf Druid Ranger Tap two untapped Elves you control: Add one mana of any color. Morph {G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) 1/1
Rahilda, Wanted Cutthroat 1RLegendary Creature — Human Werewolf First strike When Rahilda, Wanted Cutthroat deals combat damage to a player, exile a nonland card from their library at random. During any turn you attacked with a Wolf or Werewolf, you may cast that card and you may spend mana as though it were mana of any color to cast that spell. Daybound 2/2
Culling Ritual 2BGSorcery Destroy each nonland permanent with mana value 2 or less. Add {B} or {G} for each permanent destroyed this way.
Wildfire Eternal 3RCreature — Zombie Jackal Cleric Afflict 4 (Whenever this creature becomes blocked, defending player loses 4 life.) Whenever Wildfire Eternal attacks and isn't blocked, you may cast an instant or sorcery spell from your hand without paying its mana cost. 1/4
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