I use this build for literally everything, Spy missions, boss fights ad etc.

The purpose here is to have high strength for effective buffs while also having high duration and enough range to not make the motes super small.
You can swap any mods you want and even the polatities in order to adapt if you feel nedeed, however i personaly enjoy these stats and using [Fused Reservoir] to avoid having to cast Empower 3 times, with this build i just cast my buffs and usually ppl can get their buffs pretty easily.

Aura forma so you can swap to any other aura mods as you see fit.
Arcanes are completely optional and you can use any arcane you have/prefer.
If you don't have or do not want to use an Umbra forma you can just forma the [Adaptation] slot to fit the max rank [Umbral Intensify].
Empower can be changed to Dispensary if you want.