The perfect early game is by using 2 Cavalier, 2 Cannoneer and 2 Darkflight with Sejuani on the Darkflight hex. Level up to 4 at stage 2-1 if you can 2 star Rell or Aphelios. If you CAN't 2 star any unit - go for a lose streak and DON't level up!
After hitting a copy of Nomsy, transition items from Senna and start slotting in 4 Cannoneers. Level up to 6 at stage 3-2.