Mulligans
14-3 with the deck, from Leg 2k to 700.
Acrobatics and Stiltstepper are simply the engines of this deck. To keep the engine working, do not put 4+ cost cards. This is why I omitted Kayn Sunfury , Marrowslicer , Altruis the Outcast or more.
Still experimenting, but Guardian Augmerchant + Bonechewer Brawler plays seem pretty slow. Planning to play more by replacing them.