Scrapbash Gearhead

When this creature come into the battlefield, you
may exile any number of artifact from any
graveyard. For each artifact exiled, add a +1/+1 counter on this creature. For each Gearhead
exiled, add two +1/+1 counter instead.
0: Remove two +1/+1 counter from this creature,
Gain one : Armored, Volley 1, Trample,
First Strike, Reach, Flying.