One other use (not the main intent of the spell but no point in not doing it) is for the first time we have a way to cast Eye for an Eye on ourselves when solo'ing . If I'm on Scholar instead of Summoner and going after my rank 3 hunt marks or something, I'll cast Adlo and then Eye for Eye on the fairy, deploy it to me, and then attack. I usually place Eos/Selene off to the side so they don't take unnecessary damage so it's more useful having E4E up on me vs them anyway.