Gizmo, Madcap Inventor

{t}: Tap or untap target artifact. Gizmo, Madcap Inventor gains hexproof until end of turn.
At the beginning of your end step, if you control
both Gizmo and a legendary artifact named
Gizmo's Fabricator, you may pay {6}. If you do,
exile them, then meld them into
Gizmo, Unlikely Hero.
"Making stuff that doesn't explode is not as easy as
they said it would be."