Progress Amplifier

Progress Amplifier has Hexproof as long as you control an Artificer.
As Progress Amplifier enters the battlefield, tap
any number of Artificers you control. For each
Artificer tapped this way, put that many Genius Counters on Progress Amplifier.
At the beginning of combat on your turn, put a
+1/+1 counter on each artifact creature you
control for each Genius Counter on Progress Amplifier