Originally Posted by
EusisLandale
Just adding to my previous observation, we can see that same Lala Sage popping Phlegma III, just before whatever the Gunbreaker and Dragoon are doing, and firing Dosis III while the Dragoon is doing its thing. They move immediately from the Dosis III animation into the new attack, so unless they're just firing things off in ways that can't work in game that skill is not something tied to Eukrasia at all, as that ability is never used, which further helps to assume it is Toxikon III.