Hello!
I used to main [Octavia] for years along with [Excalibur Umbra] here, but now he's my main, along with [Wisp] and [Harrow] for Steel Path and Eidolons respectfully. (replace [Constitution] with [Shock Absorbers] for Steel Path).
YOU CAN REPLACE SHURIKEN WITH WARCRY AS THE SPEED BOOST MESHES PERFECTLY WITH ARCANE FURY BUT ARMOUR STRIP HELPS

The idea of this build is to basically make him into a mini-Inaros in terms of survival, as well as having the same ability as his most hated enemy - [Adaptation] from the Sentients.
NOTE: The extra forma for the [Constitution] is incase you'd prefer [Swift Momentum] for a heavy damage build, such as the insane ones you can get for [Fragor] and [Shock Absorbers]! (May link one if it is requested)

I recommend this build for Melee mains. Sadly, the [Deconstructor] build is no longer useful, so there's a good [Skiajati] build instead.

Basic use Exalted blade

This build is made to make the drainage of his abilities very low, along with versatility. It works perfectly for Steel Path and Railjack, as the Warcry can help with his 4 and [Paracesis]. The [Eternal War] helps immensely due to the lack of Crit percentage and the [Helios] scaling with his 4.

I hope this helps!