Tetzin, Gnome Champion // The Golden-Gear Colossus (The Lost Caverns of Ixalan Commander 13) - Rare Magic: The Gathering Card

Whenever Tetzin or another double-faced artifact you control enters, mill three cards. You may put an artifact card from among them into your hand.
Craft with six artifacts (, Exile this artifact, Exile the six from among other permanents you control and/or cards from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)