The Guppy MK.II

Partner with Mathias, Dune Tinker
Whenever The Guppy MK.II attacks, put a
+1/+1 counter on it. Then exile target artifact
card from your graveyard with a gear counter
on it. If one or more cards were exiled this way,
you may choose a card you own in exile with a
gear counter on it and put it onto the battlefield
if it's mana value is lesser than or equal to The
Guppy MK.II's power.
The Guppy MK.II can be your commander.