Double Masters

Grand Architect

Other blue creatures you control get +1/+1.
{U}: Target artifact creature becomes blue until end of turn.
Tap an untapped blue creature you control: Add {C}{C}. Spend this mana only to cast artifact spells or activate abilities of artifacts.

The List

Duel Decks: Mirrodin Pure vs. New Phyrexia

Scars of Mirrodin

Other blue creatures you control get +1/+1.
{U}: Target artifact creature becomes blue until end of turn.
Tap an untapped blue creature you control: Add {2} to your mana pool. Spend this mana only to cast artifact spells or activate abilities of artifacts.