Artwork unavailableAs 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.)
"This exhibition of Nehra's Threshold Principle must be expropriated and examined for its potential applications in enforcement."
—Confiscation directiveTo 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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About this printingSet, collector number and language identify this edition. Reference prices are dated snapshots, not live offers or stock. Checked dates show successful price checks; Catalog dates show imported prices. Refresh due means an update is due. USD references come from TCGplayer; EUR references come from Cardmarket, via Scryfall. Missing prices are unavailable.
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View printing on ScryfallEn · Paper · MTGO
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