yeah, i've gotten it a few times on mine, but not much. hell, i even rolled a few light accessories that work like ascension...
but the thing is, i got one on sol and it seems like she healed EVERYONE by 2750 when her heal was buffed with her atk debuff.... so if i moved the other from Artemis to her, it seems like it'll beef up her AoE heal more.
I'll get a screenshot (or better yet, a recording of this soon to verify it since this is worth looking into). Only Ancient Accessories seem to give that effect though so if it's a blue "+" icon, doublecheck your stuff.
in the meantime, this is all 6 elements done without anyone dying...
https://www.youtube.com/playlist?lis...fjLolqU9k-Yupl
EDIT: the thing with the healing effect is that it increases the effect of DIRECT heals from the character, but only the character itself gets a regen increase.
What this means is that if Amaterasu had it, she'd recover more HP than the others, but if Brynhildr had it, she'd heal everyone by more. It's more or less a pseudo ascension...
considering i got a 1%+ and a 3%++ on Sol (by sheer light drop rate luck), her heal with her buffs jumps from 2700 to 2772, but only she would gets 385 regen HP per turn instead of 375 like everyone else
this shows it off: https://www.youtube.com/watch?v=-WOvpDyBpXQ