(Relatively) Budget Rakano Aggro (Echoes of Eternity Gauntlet - strong core rares only)

42-0 with games averaging around 7 turns and 3-4 minutes per game.
7 wins Limitless Possibilities
7 wins Power of Progress
7 wins Labyrinth Treasury (Video here with no commentary, just a speed run which is about 20 minutes total)
7 wins Limitless Possibilities despite them getting turn 1 Destiny 5/3 flyer. There were no destiny units on either side the rest of the game.
7 wins Company of Exiles. I got really unlucky to draw only Justice influence in game six. However, for whatever reason the AI decided to Shen Ra its own board when it was way ahead. I then mounted a nice comeback and after that the gauntlet boss was cake. Video here
7 wins Highly Skilled

This is meant to be a fairly budget list. Probably will be a 5.5 win average deck I suspect over a longer sample size. A few of these rares are in starter collections. Pyroknight is the most replaceable rare just pick a decent aggressive 1 drop that you own. Valkyrie Enforcer, Unseen Commando and the Emblems are irreplaceable I feel as is Champion of Glory. The fliers are too strong and the emblems stop you from flooding and help continue applying pressure. We don't need a Merchant, we run Thunder Wings which is a huge beating. Just exhaust a 1 drop that is stalled out by turn 3 and smash in the air.

As far as non budget improvements, I feel this deck is pretty optimized as it is. I suspect Shen-Ra, Unbreakable should replace Pyroknight but other than that I don't think I would change a thing. The deck is blisteringly fast and is very consistent just by attacking quickly on the ground, then in the air and plenty of direct damage to finish the game. It attacks in so many angles that it's hard for the AI to deal with.