this kuva kohm can be use for

-Equinox duality specter (best scaling with bonus from duality)

-Umbral excalibur turret (passive umbra excalibur when using operator) (no scaling at all but require no upkeep)~~

-[Wukong] clone (also no scale to dmg)

All can be buff with weapon buff ability (e.g. eclipse, roar)

The best innate element for this is magnetic because it [Shred] shield of corpus in index (bonus dmg to shield) and with high armor, tox is not effective and rad is good on armor. Combine, this magnetic [Kuva Kohm] have highest dps when used by those specter.
60s viral help keep the magnetic weight for reliable magnetic proc
If you dont have Primed cleanse corpus, use Frail Momentum instead
Galvanized mods and primary arcane don't have any effect when use by specter (primary merciless give ammo in case you wanna shoot some yourself)

Good luck getting tons of credit and get highest kill while watching your clone shooting

Due to ammo change, U should have dispensary to get sufficient ammo for the builld