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
Siphon Insight UBInstant Look at the top two cards of target opponent's library. Exile one of them face down and put the other on the bottom of that library. You may play the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell. Flashback {1}{U}{B}
Mystic Genesis 2GUUInstant Counter target spell. Create an X/X green Ooze creature token, where X is that spell's mana value.
Gemhide Sliver 1GCreature — Sliver All Slivers have "{T}: Add one mana of any color." 1/1
Unearth BSorcery Return target creature card with mana value 3 or less from your graveyard to the battlefield. Cycling {2} ({2}, Discard this card: Draw a card.)
Sasaya's Essence Legendary Enchantment Whenever a land you control is tapped for mana, add an additional one mana of any type that land produced for each other land you control with the same name as it.
Mana-Charged Dragon 4RRCreature — Dragon Flying, trample Join forces — Whenever Mana-Charged Dragon attacks or blocks, each player starting with you may pay any amount of mana. Mana-Charged Dragon gets +X/+0 until end of turn, where X is the total amount of mana paid this way. 5/5
Ryan Sinclair 2RLegendary Creature — Human Whenever Ryan attacks, exile cards from the top of your library until you exile a nonland card. You may cast the exiled card without paying its mana cost if it's a spell with mana value less than or equal to Ryan's power. Put the exiled cards not cast this way on the bottom of your library in a random order. Doctor's companion (You can have two commanders if the other is the Doctor.) 2/2
Jaspera Sentinel GCreature — Elf Rogue Reach {T}, Tap an untapped creature you control: Add one mana of any color. 1/2
Lavinia, Azorius Renegade WULegendary Creature — Human Soldier Each opponent can't cast noncreature spells with mana value greater than the number of lands that player controls. Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell. 2/2
Lae'zel, Callous Warrior 3WBLegendary Creature — Gith Warrior Double strike When this creature enters the battlefield or specializes, return up to two target creature cards with total mana value 3 or less from your graveyard to the battlefield. 3/6
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