Trinisphere [Kaladesh Inventions] Urza’s Power-Plant Spend this mana only to

Spend this mana only to cast creature spells

−7: Exile the top ten cards of your library

Set: Fate Reforged Type: Legendary Creature — Dragon Rarity: Rare Cost: {3}{G}{W} Flying

and cannot be truly contained

return it to your hand unless target opponent pays 3 life

Trinisphere [Kaladesh Inventions] Urza’s Power-Plant Spend this mana only toSet: Kaladesh Inventions 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.) "This exhibition of Nehra's Threshold Principle must be expropiated and examined for its potential