Looking awesome! Here i have some suggestion about positioning. Based on the ATTACK SEQUENCE, you may put oshanus in 2nd position, and fire spitter in last position (optional).
anyway, it's my entry for weekly social media challenge you may interested to read, there's some good cards for high leagues (gold-champs)
https://peakd.com/hive-13323/@rexymonster/five-greatest-support-cards-of-chaos-legion-editon