Trinisphere [Double Masters] 207 its controller adds an additional

its controller adds an additional one mana of that color

”—Lovisa Coldeyes

you may search your library for up to two land cards

Set: Morningtide Type: Enchantment Rarity: Rare Cost: {U}{U} As Declaration of Naught enters the battlefield

tap enchanted creature

Trinisphere [Double Masters] 207 its controller adds an additionalSet: Double Masters Type: Artifact Rarity: Mythic Cost: {3} 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.)