Open a Lockbox? Materia V.
Open a Cold-warped Lockbox? Materia V.
Kill a monster from a Bunny Fate, run all the way past Griffins and Morbols to get to a Gold chest and open it up? Materia VI!
Seriously, are there any other prizes? I understand the minions and other stuff became trivial to get in Anemos, but swinging to the opposite extreme of "Everything is now absurdly rare" when there are significantly less Lockbox drops isn't much better.
