any traveller (ability power / HP build recommended)
movement abilities or shielding ones are a good synergy
basically all you do is pump all your dream dust into "essence of spiral" and "essence of clemency"
essence of spiral is basically a auto-firing turret, that does not need an active memory(skill)
however! it still counts as the "memory" dealing said dmg which lets "essence of clemency" proc of the hits that essence of spiral does giving you a fast shooting auto-firing turret that heals on every hit! without ever having to push a button.
i managed to get my essence of spiral up to 1060%
and my essence of clemency up to 600%
and it absolutely melted all the bosses while keeping my hp nicely topped up.