Venomage joins the Lizardmen faction as a new poisoner and another champion that can Trigger Poison Debuffs (Poison Explode) albeit just 1 turn of the Poison debuff. Depending on the champions multipliers, the a1 could potentially be helpful against the Scarab Boss in Doom Tower with its Decrease MAX HP by 75% (this does require Heal Reduction Debuff to be present).
The rest of the kit is also interesting with a passive that reduces team damage if a heal reduction is place, the ability to place heal reduction and the ability to place both decrease defence and decrease attack (if target is under poison).
Whilst the Kit is very conditional, Venomage looks a strong option for Clan Boss. Due to her strong damage, she is also great for late-game Fire Knight and Dragon.