Trinisphere

Artifact

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}

to cast costs {2}

to cast instead.)

Illustrated by AKQA · Secret Lair Drop (SLD)

Legalities

Standard: Not Legal
Pioneer: Not Legal
Modern: Legal
Legacy: Legal
Vintage: Restricted
Duel Commander: Legal
Pauper: Not Legal

Printings

Rulings

2020-08-07
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.
2020-08-07
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.

Archetypes that play this card

Duel Commander

Aerid Konstrari 60.0% of lists
Quintorius, History Chaser 20.0% of lists

Legacy

Helm/Leyline Stompy 100.0% of lists
Naya Initiative 100.0% of lists
Mystic Forge Combo 21.6% of lists

Show 3 more Legacy archetypes

Red Stompy 18.2% of lists
Other 2.0% of lists
Eldrazi 1.6% of lists

Modern

Eldrazi Tron 72.7% of lists
Through the Breach 20.0% of lists
Eldrazi 0.5% of lists

Vintage

Broadside Bombardiers 100.0% of lists
Sphere Shops 100.0% of lists
Wastescape Battlemage 100.0% of lists

Show 5 more Vintage archetypes

Raker Shops 39.7% of lists
Stiflenought 33.3% of lists
Esper Lurrus Control 22.1% of lists
Mono-White Initiative 6.3% of lists
Other 3.4% of lists