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
Haunting Wind 3BEnchantment Whenever an artifact becomes tapped or a player activates an artifact's ability without {T} in its activation cost, Haunting Wind deals 1 damage to that artifact's controller.
Scion of the Ur-Dragon WUBRGLegendary Creature — Dragon Avatar Flying {2}: Search your library for a Dragon permanent card and put it into your graveyard. If you do, Scion of the Ur-Dragon becomes a copy of that card until end of turn. Then shuffle. 4/4
Gustcloak Cavalier 3WWCreature — Human Knight Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) Whenever Gustcloak Cavalier attacks, you may tap target creature. Whenever Gustcloak Cavalier becomes blocked, you may untap Gustcloak Cavalier and remove it from combat. 2/2
Stalwart Valkyrie 3WCreature — Angel Warrior You may pay {1}{W} and exile a creature card from your graveyard rather than pay this spell's mana cost. Flying 3/2
Polygraph Orb 4BArtifact When Polygraph Orb enters the battlefield, look at the top four cards of your library. Put two of them into your hand and the rest into your graveyard. You lose 2 life. {2}, {T}, Collect evidence 3: Each opponent loses 3 life unless they discard a card or sacrifice a creature. (To collect evidence 3, exile cards with total mana value 3 or greater from your graveyard.)
Rakdos, the Showstopper 4BRLegendary Creature — Demon Flying, trample When Rakdos, the Showstopper enters the battlefield, flip a coin for each creature that isn't a Demon, Devil, or Imp. Destroy each creature whose coin comes up tails. 6/6
Disturbed Slumber 1GInstant Until end of turn, target land you control becomes a 4/4 Dinosaur creature with reach and haste. It's still a land. It must be blocked this turn if able.
Ironclad Revolutionary 4BBCreature — Aetherborn Artificer When Ironclad Revolutionary enters the battlefield, you may sacrifice an artifact. If you do, put two +1/+1 counters on Ironclad Revolutionary and each opponent loses 2 life. 4/4
Vraan, Executioner Thane 1BLegendary Creature — Phyrexian Vampire Whenever one or more other creatures you control die, each opponent loses 2 life and you gain 2 life. This ability triggers only once each turn. 2/2
Lantern of Undersight 1Artifact You draw cards from the bottom of your library instead of the top of your library.
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