Grand Architect is a rare Creature — Vedalken Artificer card from Double Masters (2XM), collector number 53. Current market price: $0.90 (foil $1.13), TCGplayer market prices via Scryfall.
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.