Now that you have your core creature base figured out, it's time to add in spells
Well, if a Contraption would be placed onto the battlefield and it wasnt assembled, or if a Contraption would move from the battlefield to any other zone, it is instead placed into its owners scrapyard (a special graveyard for the Contraption deck)
7 best Into the Inklands ruby cards in Disney Lorcana Always better to banish
In the land of commons, though, I think this one's best as a rare sideboard option or Tron one-of and not much else
Field of the Dead just breaks the game wide-open with the value it can generate
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