PVE

(Cheap and effective )

Base Pet: Ethyl -> (all the frog good for pve they can hit group of enemies but Ethyl best of them good passive ability reduce armor critical and hit by 10%)
Arcane Ability: Glowstik (Slows enemies, produces 6 toxic pools, provides allies with a shield that heals when damage is taken.)
Happiness Bonus: Nightshade ( best bonus for low cost )