Engineer

Reach
Fabricate 2 (When this creature enters the battlefield, put a +2/+2 counter on it or create a 2/2 colorless Sentry token on the battlefield.)
{2}{w/u}, {t}: Exhaust this card and destroy target artifact. (Exhausted cards do not untap during their controller's next untap phase.)
"I told ya, don't touch that darn thing!"