三なる宝球 (JP Trinisphere)

アーティファクト    (CMC:3)

三なる宝球がアンタップ状態であるかぎり、唱えるために支払うマナが３点未満である各呪文を唱えるために支払うマナはそれぞれ３点になる。（コストの増加分のマナは、どの色のマナでも無色マナでも支払える。たとえば、ある呪文を唱えるコストがなら代わりにになる。）

303 2XM • JPTim Hildebrandt

™ & © 1993— Wizards of the Coast

Notes: TODO: Update Copyright

Legal in: Modern,Mirrodin Block,Legacy,Freeform,Prismatic,Tribal Wars Legacy,Singleton 100,Commander

Oracle Text (click to copy):

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.)

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View this MTG card on Gatherer

12/1/2004
Trinisphere's ability affects the total cost of the spell. It is applied *after* any other cost increasers or cost reducers are applied: First apply any cost increases. Next apply any cost reducers. Finally look at the amount of mana you have to pay. If it's less than three mana, you'll pay three mana.
12/1/2004
Even with a cost reducer on the battlefield, spells can't cost less than three mana to cast.
12/1/2004
If a spell costs at least three mana due to additional costs, such as kicker costs, that's fine.
12/1/2004
You still need to pay any additional nonmana costs the spell has, such as sacrificing a creature or discarding cards.
12/1/2004
Casting a creature with morph face down already costs three mana, even though the converted mana cost of the face-down spell is zero, so Trinisphere normally doesn't modify the total cost of a face-down creature spell. However, if Dream Chisel is reducing that cost while Trinisphere is on the battlefield, you'll still have to pay three mana for the spell.

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Card Trinisphere is not on TCGPlayer.