If you control a commander as you cast this spell

A Battle for Zendikar booster contains 15 Magic: the Gathering cards including 1 rare

10 commons and 1 basic land

Karn’s power and toughness are each equal to the greatest mana value among artifacts you control

Legendary Creature — God

Trinisphere - Kaladesh Inventions (Foil) Skick:NM If you control a commanderArtifact 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}{B} to cast costs {2}{B} to cast instead.) Set: Kaladesh Inventions (MPS)