"Supernova"

So, I just recently saw some footage of a group killing proto-ultima at fanfest and it casts supernova at the end of the fight. It has already been demonstrated that cutscenes can be used mid fight via zurvan.

So what I was wondering is, would it be possible to put in a little easter egg :^) of the infamous Sephiroth's supernova :):) maybe as a hard enrage(the maximum time allotted to fight a boss) to a fight. I would fully intend for it to be unable to be skipped just like the original :) but I also feel it wouldn't be forced onto players with it being a hard enrage to a fight.

Just a random thought, maybe it can be used in other ways as well, it seems like a fun thing to do though maybe.

Might work better on a timed boss fight as a Wipe Mechanic, but people generally do not like those.

That's what a hard enrage is.....and I honestly kind of feel like it wouldn't be so oppressive to players the way you make it sound. It's like saying you see the "Ultima" cast go off in either Ultima fight constantly which just isn't true.