This is my build to make [Nova] an unkillable melee god.

right now i cant change Novas second ability to vorunas helminth ability, but vorunas helminth ability is really good with [Equilibrium] and Arcane blessing that will make her really tanky. + adaption and [Health Conversion] is also helping her to become almost unkillable as she run through missions with her melee weapons!

You can change [Intensify] to [Umbral Intensify], but you will need extra formas. and i dont know yet, but maybe [Archon Intensify] could work with vorunas ability, but i really dont know.