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As long as this artifact 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.)
Abilities, attacks, weakness & resistance
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Trinisphere (Darksteel 154, Rare) is an artifact that sets a minimum total casting cost for spells while it is untapped. As long as it remains untapped, any spell that would cost less than three mana to cast instead costs three mana, affecting casting decisions and resource management for both players. Debuted in Darksteel as a powerful artifact imposing a minimum casting cost on spells.
Catalog pricing data as of 4 May 2026, 22:51
