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
Unstable Frontier Land {T}: Add {C}. {T}: Target land you control becomes the basic land type of your choice until end of turn.
Chronicler of Worship 1GCreature — Human Monk When Chronicler of Worship enters the battlefield, put a random Shrine card from among the top seven cards of your library into your hand. It perpetually gains "This spell costs {1} less to cast." Then shuffle. {T}: Add one mana of any color. 1/1
Restless Bivouac Land Restless Bivouac enters the battlefield tapped. {T}: Add {R} or {W}. {1}{R}{W}: Restless Bivouac becomes a 2/2 red and white Ox creature until end of turn. It's still a land. Whenever Restless Bivouac attacks, put a +1/+1 counter on target creature you control.
X UBLegendary Creature — Human Spy As long as X is in X's owner's opponent's hand, X's owner may cast X and activate X's abilities. That opponent can't cast X and plays with their hand revealed. {U}{B}, {T}: Put X into target opponent's hand. {3}{U}{B}: You may play a land or cast a spell from the hand X is in. If you cast a spell this way, you cast it without paying its mana cost. 2/2
Baloth Cage Trap 3GGInstant — Trap If an opponent had an artifact enter the battlefield under their control this turn, you may pay {1}{G} rather than pay this spell's mana cost. Create a 4/4 green Beast creature token.
Uba Mask 4Artifact If a player would draw a card, that player exiles that card face up instead. Each player may play lands and cast spells from among cards they exiled with Uba Mask this turn.
Etrata, Deadly Fugitive 1UBLegendary Creature — Vampire Assassin Deathtouch Face-down creatures you control have "{2}{U}{B}: Turn this creature face up. If you can't, exile it, then you may cast the exiled card without paying its mana cost." Whenever an Assassin you control deals combat damage to an opponent, cloak the top card of that player's library. 1/4
Wound Reflection 5BEnchantment At the beginning of each end step, each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)
Elvish Harbinger 2GCreature — Elf Druid When Elvish Harbinger enters the battlefield, you may search your library for an Elf card, reveal it, then shuffle and put that card on top. {T}: Add one mana of any color. 1/2
Bronze Horse 7Artifact Creature — Horse Trample As long as you control another creature, prevent all damage that would be dealt to Bronze Horse by spells that target it. 4/4
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