Drakin, the Mad Artificer

Drakin, the Mad Artificer's toughness is equal
to the amount of artifacts in play.
{x}{t}: Target non-land permanent with converted
mana cost {x} becomes an artifact in addition
to its other types.
Sacrifice Drakin, the Mad Artificer: Create a copy
of target artifact an opponent controls, and put
that copy into play under your control.