Master Transmuter [Double Masters] Shadowmoor Tokens or blue creature

or blue creature

Set: Summer Magic / Edgar Type: Artifact Creature — Construct Rarity: Uncommon Cost: {1} Brass Man doesn't untap during your untap step

Set: Oversize Cards Type: Creature — Beast Rarity: Rare Cost: {3}{B} As long as Guardian Beast is untapped

Set: Kaladesh Inventions Type: Artifact Creature — Angel Rarity: Mythic Cost: {7} Flying

Set: Judge Gift Cards 2006 Type: Enchantment Rarity: Rare Cost: {1}{B}{G} {X}

Master Transmuter [Double Masters] Shadowmoor Tokens or blue creatureSet: Double Masters Type: Artifact Creature Human Artificer Rarity: Rare Cost: {3}{U} {U}, {T}, Return an artifact you control to its owner's hand: You may put an artifact card from your hand onto the battlefield. "Wasted potential surrounds us. Lend me that bauble, and let me see what it can be made to be."