I personally think Blue Magic would fit nicely within the paradigm of arcanima. Arcanima is essentially it's own form of math and science, and I could see an arcanist observing a monster's magical capability, breaking down the the technique into its basic components, then recreating those conditions via magic and directing them toward a target.
V'aleera's Wiki - https://wiki.ffxiv-roleplayers.com/pages...eera_Lhuil
V'aleera's Tumblr - valeeralhuil.tumblr.com
V'aleera's Tumblr - valeeralhuil.tumblr.com