Ok, I thought of this idea like a few minutes ago, inspired by what happened to Theos when he was fighting Prometheus in the lore, when his phoenix magic ‘burned out’ when he was in a near death situation.
My proposition is that when you’re at maybe like 1-5% of your HP, you get a slight damage boost, which would gradually increase with your gear, and maybe an enraged colour change, idk, this sounded way cooler in my head.
That only happened because Theos over exerted his power way over his limit, causing him to mutate Phoenix. It’s not just a thing that happens regularly, Theos is probably the only recorded history of that happening, although your idea is similar to adrenaline, and id say it could be added where you only get a small damage boost when you’re about to die
king tyrun was recorded to have a rare mutation (equinox)
no other recorded cases though, close enough
note: this is only in the webtoon canon and not the game canon, since theos isn’t said to obtain his rare phoenix mutation in the game’s lore, and vetex said tyrun was non canon
King tyrun had a rare mutation as in, he didn’t really mutate his magic, he actually combined Light and shadow magic, normal mutations do not combine other Magic’s, Theos on the other hand already had a mutation that mutated again, maybe rare mutations are a certain case with anything strange that happens with magic idk
And I’m sure if this ever becomes the case, Vetex will use theos’s webtoon death, because honestly just saying Theos died from injuries is bullshit, he literally has magic that can heal him
the only “combined” magic at the time of aa (that’s also non canon) is aether lightning
not to mention, equinox WAS in the mutation chart draft vetex had made, could have just been considered a “rare mutation” due to only a single recorded person (that’s also faded into legend) having obtained it, along with it being as powerful as it is