Nexus of Becoming - 25 M BIG Foil

At the beginning of combat on your turn, draw a card. Then you may exile an artifact or creature card from your hand. If you do, create a token that's a copy of the exiled card, except it's a 3/3 Golem artifact creature in addition to its other types.

mythic
Artifact
From the Magic: The Gathering set Outlaws of Thunder Junction.