Mishmish, Slumbering Construct

Whenever Mishmish, Slumbering Construct
becomes tapped, put a +1/+1 counter on target
artifact you control.
{x}, {t}: Put a +1/+1 counter on target artifact
with mana value X.
Mishmish Slumbering Construct can be your commander.
Partner with Skagria, Desert Scavenger