Zandra

Yep. Only thing is it'd probably easily be countered if an AoE skill lands and erases them.

Amusingly enough Hollow Fragment offers battle skills like Shiny Hollow that provide physical clones the enemy hits before they hit you. So every time the attack, the clone poofs. Shiny Hollow casts 12 of these.

Hmm. Perhaps an ability that capped damage to a certain portion of your HP, or a weapon that gained stronger and stronger abilities as you took more damage based off Wild Dance.