"Valkyrie"
Similar to Avatar of Earth in full constructed, we are trying to beef up our avatar with earth sites while splashing air for movement and mobility.
Avatar of Earth with a lance or the Rhongo is extremely deadly.
Get into position with Tactical Move or your Fine Courser then fire a huge shot at your enemy with the Fail-not Bow.
Likewise, donning the Goswhit Helmet allows you to clear pesky enemy minions while taking no damage.
There are lots of beefy minions at your disposal to back you up. Sir Perceval on a Fine Courser or with a Tactical Move makes it easier to complete his quest. And calling in the Guards at the right time can be game swinging.
Rhitta locks down the board while you both wreck the opponent.
If you don't draw an air site in your opening hand you should mulligan all three. Establish your air threshold as soon as possible.
Otherwise, Field Laborers are an ideal opener. Play them defensively, in a hard-to-reach spot. You're also looking for any of your artifacts in your opening hand.
An early Tactical Move is ideal for getting your avatar into attack position while you're still playing sites.