If you get 1-14, you get to create a copy of that Creature thats tapped and attacking, but you exile it at the end of combat
On MTGO, the value of a given card is almost solely based on its Constructed playability
(sigh) If you do manage to assemble the contraption, as it were, he can do some cute stuff
All Vehicle cards are noncreature cards when they are not crewed, enabling you to cast Vehicles from the top of your library, and with flash to catch your opponents off guard
Metalwork Colossus I spent lots of time trying to make Metalwork Colossus perform in Standard and often fell short, but its an interesting colorless card for Commander
One interesting aspect is how this card interacts with Delirium strategies, potentially enabling the mechanic while also providing a way to recover key permanents