Clunk, Unstable Genius

+1: Assemble two Contraptions. Scry 1.
0: Discard X cards, where X is the number of Contraptions you control, then draw as many cards as you discarded with this ability.
-5: Flip a coin for each Contraption you control. For each coin that comes up heads, deal 3 damage to target opponent and a creature they control.