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
Kruphix, God of Horizons 3GULegendary Enchantment Creature — God Indestructible As long as your devotion to green and blue is less than seven, Kruphix isn't a creature. You have no maximum hand size. If you would lose unspent mana, that mana becomes colorless instead. 4/7
Quarum Trench Gnomes 3RCreature — Gnome {T}: If target Plains is tapped for mana, it produces colorless mana instead of white mana. (This effect lasts indefinitely.) 1/1
Mana Reflection 4GGEnchantment If you tap a permanent for mana, it produces twice as much of that mana instead.
The Golden Throne 4Legendary Artifact Arcane Life-support — If you would lose the game, instead exile The Golden Throne and your life total becomes 1. A Thousand Souls Die Every Day — {T}, Sacrifice a creature: Add three mana in any combination of colors.
Mana Abundance 2RWorld Enchantment If a player would add mana, instead all players add that mana.
False Dawn 1WSorcery Until end of turn, spells and abilities you control that would add colored mana instead add that much white mana. Until end of turn, you may spend white mana as though it were mana of any color. Draw a card.
Omnath, Locus of All WUB/PRGLegendary Creature — Phyrexian Elemental If you would lose unspent mana, that mana becomes black instead. At the beginning of your precombat main phase, look at the top card of your library. You may reveal that card if it has three or more colored mana symbols in its mana cost. If you do, add three mana in any combination of its colors and put it into your hand. If you don't reveal it, put it into your hand. 4/4
Ritual of Subdual 4GGEnchantment Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) If a land is tapped for mana, it produces colorless mana instead of any other type.
Nyxbloom Ancient 4GGGEnchantment Creature — Elemental Trample If you tap a permanent for mana, it produces three times as much of that mana instead. 5/5
Virtue of Strength 5GGEnchantment If you tap a basic land for mana, it produces three times as much of that mana instead.
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