Artwork unavailableEnglish Oracle text
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 
to cast costs 
to cast instead.)
只要三定法球并未横置，每个使用时之费用小于三的咒语都须支付三点法术力才能使用。 （需额外支付的费用可以任意颜色的法术力或无色法术力来支付。 举例来说，要支付来使用的咒语，则改为要支付来使用。)
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions. Finally, apply Trinisphere's effect if the mana component of the spell's cost is less than three mana. The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
If Trinisphere leaves the battlefield or becomes tapped or untapped as a cost to cast a spell, this cost is paid after you've locked in the total cost.
Legality follows the dated Scryfall catalog snapshot.
For draft and prerelease, check the event’s release and rules. Missing statuses stay unavailable.
Official Magic rules| Format | Status |
|---|---|
| Standard | Not legal |
| Pioneer | Not legal |
| Modern | Legal |
| Legacy | Legal |
| Vintage | Restricted |
| Commander | Legal |
| Oathbreaker | Legal |
| Alchemy | Not legal |
| Historic | Not legal |
| Brawl | Not legal |
| Comp. Brawl | Not legal |
| Timeless | Not legal |
| Pauper | Not legal |
| Duel | Legal |
For draft and prerelease, check the event’s release and rules.
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