I swear I keep trying to make him attack more and he never does. Odds of Conjure Coins will definitely be going down again.
The healing done by Aeternator's Rising Force will negate some damage, but if his health is still down by 700 then I'm not sure what's going on. I'll have to look into that a bit more. (That said, I'm considering removing said healing as it doesn't really "fit" the description- I wanted a use for the Heal Buster in the fight, but it doesn't really make too much sense to take that away from damage, unlike with Barrier Shift where you're technically doing "negative" damage.)
I probably need to specifically make a plugin call to add Aeternator to the bestiary; since you lose the fight, it doesn't get "counted". Same with Aeternator's conversation, I just need to change a switch check. Minor fixes, easy enough to do. I'll probably do a quick patch with all of that tomorrow morning.
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The sampled items in the Tower are completely random, so duplicates are possible.
A lot of the "Raining Attack" states (and Artillery Fire) could probably use a check to see if the enemy party is actually still standing. That'll take a bit of extra effort as I need to test each one to make sure the edits don't break it, but I'll work on that while I plan out the next update.