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
Gideon of the Trials 1WWLegendary Planeswalker — Gideon [+1]: Until your next turn, prevent all damage target permanent would deal. [0]: Until end of turn, Gideon of the Trials becomes a 4/4 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn. [0]: You get an emblem with "As long as you control a Gideon planeswalker, you can't lose the game and your opponents can't win the game." Loyalty 3
Insult 2RSorcery Damage can't be prevented this turn. If a source you control would deal damage this turn, it deals double that damage instead.
C.A.M.P. 3Artifact — Fortification Whenever fortified land is tapped for mana, put a +1/+1 counter on target creature you control. If that creature shares a color with the mana that land produced, create a Junk token. (It's an artifact with "{T}, Sacrifice this artifact: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.") Fortify {3} ({3}: Attach to target land you control. Fortify only as a sorcery.)
Luminesce WInstant Prevent all damage that black sources and red sources would deal this turn.
Harvester Druid 1GCreature — Human Druid {T}: Add one mana of any color that a land you control could produce. 1/1
The Seedcore Land — Sphere {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast Phyrexian creature spells. Corrupted — {T}: Target 1/1 creature gets +2/+1 until end of turn. Activate only if an opponent has three or more poison counters.
Shizuko, Caller of Autumn 1GGLegendary Creature — Snake Shaman At the beginning of each player's upkeep, that player adds {G}{G}{G}. Until end of turn, they don't lose this mana as steps and phases end. 2/3
The Bloodsky Massacre 1BREnchantment — Saga (As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Create a 2/3 red Demon Berserker creature token with menace. II — Whenever a Berserker attacks this turn, you draw a card and you lose 1 life. III — Add {R} for each Berserker you control. Until end of turn, you don't lose this mana as steps and phases end.
Isolate WInstant Exile target permanent with mana value 1.
Primal Beyond Land As Primal Beyond enters the battlefield, you may reveal an Elemental card from your hand. If you don't, Primal Beyond enters the battlefield tapped. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast an Elemental spell or activate an ability of an Elemental.
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