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17 May 2024: Card library updated.

Trinisphere

3 · Artifact

As long as Trinisphere is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost {1}{B} to cast costs {2}{B} to cast instead.)

Similar cards

Color identity:
NameManaTypeText
Scourge of Nel Toth 5BBCreature — Zombie Dragon Flying You may cast Scourge of Nel Toth from your graveyard by paying {B}{B} and sacrificing two creatures rather than paying its mana cost. 6/6
Oakhame Adversary 3GCreature — Elf Warrior This spell costs {2} less to cast if an opponent controls a green permanent. Deathtouch Whenever Oakhame Adversary deals combat damage to a player, draw a card. 2/3
Dream Devourer 1BCreature — Demon Cleric Each nonland card in your hand without foretell has foretell. Its foretell cost is equal to its mana cost reduced by {2}. (During your turn, you may pay {2} and exile it from your hand face down. Cast it on a later turn for its foretell cost.) Whenever you foretell a card, Dream Devourer gets +2/+0 until end of turn. 0/3
Windbrisk Heights Land Hideaway 4 (When this land enters the battlefield, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.) Windbrisk Heights enters the battlefield tapped. {T}: Add {W}. {W}, {T}: You may play the exiled card without paying its mana cost if you attacked with three or more creatures this turn.
Unbound Flourishing 2GEnchantment Whenever you cast a permanent spell with a mana cost that contains {X}, double the value of X. Whenever you cast an instant or sorcery spell or activate an ability, if that spell's mana cost or that ability's activation cost contains {X}, copy that spell or ability. You may choose new targets for the copy.
The Great Henge 7GGLegendary Artifact This spell costs {X} less to cast, where X is the greatest power among creatures you control. {T}: Add {G}{G}. You gain 2 life. Whenever a nontoken creature enters the battlefield under your control, put a +1/+1 counter on it and draw a card.
In Search of Greatness GGEnchantment At the beginning of your upkeep, you may cast a permanent spell from your hand with mana value equal to 1 plus the highest mana value among other permanents you control without paying its mana cost. If you don't, scry 1.
Thwart 2UUInstant You may return three Islands you control to their owner's hand rather than pay this spell's mana cost. Counter target spell.
Fluctuator 2Artifact Cycling abilities you activate cost up to {2} less to activate.
Mox Opal 0Legendary Artifact Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts.
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