Here is my take on argenport empower style deck. Can be very explosive and i managed to won lots of midrange late game too. Deck is not perfect and particulary weak to flying unit.
I often try to city wide ban when i'm against rakano to remove Icaria or rizahn from ennemy deck since we are weak to them later on.
Try to play smart on your power : using your power on curve might be bad idea if you have a lot of empower cards in hand and only few sigil in hand. If you know there is no boardclear in opponent's deck then place your units and then use power cards +
Lost Scroll for example to deal massive damage.
You have few good option in market to deal with common archetypes :
Adjudicator's Gavel => this card is insane against any void centric deck.
Avigraft => really good against threat like new vara's or something you really don't wanna see again. (non - flying thought)
Citywide Ban => Anti-late game if you know they have problematic flying unit you can't deal with.
Martyr's Chains => this is a late game closer. Once in game it's the beginning of the end. Each time you play a sigil => 1 unconditional removal. and each turn your units are more and more scary.
Changes :
I used to have
Resilient Wagoneer but I added few copies of
Vara, Vengeance-Seeker and annihilate to have more control over the board.