Overview of the build:
-It's SUPPOSED to be cheap that's why there are no crazy amounts of forma here.
-It's not entirely for SP but if you're bored, eh go ahead.
-Arcane Strike is a must since this build focuses on getting up close and personal with enemies using melee.
-Emphasis on duration without sacrificing too much range for Disarm.
-No need to worry about your energy pool (unless there are Eximus Leeches or those pesky infested parasite eximus nearby) because [Energy Siphon] provides energy regen and Coaction Drift will boost that effect. 0.6 + the 15% from Coaction Drift gives you about 1.5 energy /s. Given that Invisibility costs 13 energy to cast and lasts about 25 seconds, you get your energy back passively with a little bit more for profit. Combine this with Energizing Dash from Zenurik and you pretty much have your energy pool full most of the time.
Helminth Ability:
-It's completely optional but you can try putting on "Warcry" from [Valkyr] and replace [Stretch] with the augment for that ability since this build is useful for going around shredding enemies into meat strips for fun.
-You can also see that I put [Nyx]'s "Mind Control" on there and again, you can replace [Stretch] with her augment for that specific ability. Why did I put this ability on there? Well I'm lazy and I wanna mind control a Nox or a Heavy Gunner to do the work for me especially when you put in the augment that gives enemies under the effect of Mind Control bonus damage.
-Another helminth ability you can put on is [Equinox]'s "Rest & [Rage]" for stealth on top of stealth. Keep in mind that if you do put in that ability, you have to make your emissive color into a dark color to put them to sleep or a bright color to make them more vulnerable to damage.
Now go out there and have fun committing planetary genocide by shredding enemies into meat strips, Tenno.