Assassin/Ninja Need a Roulette High Spell Damage Build

As the title says I need an endgame thunder build with Roulette that does high spell damage. No mythics, LI items are fine.

 

https://hppeng-wynn.github.io/index.html#4_0uB05W0LA0uD0qo0TQ0K40BR0b01a1i140p091g00000
WynnBuilder build:
> Nychthemeron
> Bete Noire
> Flummox
> Magnet Repulsor
> Unspeakable
> Draoi Fair
> Prowess
> Gigabyte
> Roulette []

 

https://hppeng-wynn.github.io/index.html#4_0uB05W0DS0uD0qo0TQ0K40BR0b01a1i140j091g00000
WynnBuilder build:
> Nychthemeron
> Bete Noire
> Demon Tide
> Magnet Repulsor
> Unspeakable
> Draoi Fair
> Prowess
> Gigabyte
> Roulette []
objectively better (actual sustain!!!)

 

https://wynnbuilder.github.io/#4_0uB0Jb0Je0uD0TQ0Oh0Of0uI0b01B1R1f-S-S1g00000
WynnBuilder build:
> Nychthemeron
> Beetle Aegis
> Chaos-Woven Greaves
> Magnet Repulsor
> Draoi Fair
> Gold Static Ring
> Gold Hydro Bracelet
> Eyes on All
> Roulette []

https://wynnbuilder.github.io/#4_07F0Jb0Je0uD0TQ0t80OJ0uI0b01T1D1h-S-S1g00000
WynnBuilder build:
> Caesura
> Beetle Aegis
> Chaos-Woven Greaves
> Magnet Repulsor
> Draoi Fair
> Yang
> Diamond Hydro Bracelet
> Eyes on All
> Roulette []

 

ETFA ETFA ETFA (Actually it's ETF but anyways) - I would argue for bonus points for using unconventional items too :)
https://hppeng-wynn.github.io/index.html#4_06W0dG0DS0SB0uA0uA0FN0og0b0191I-11M001g00000
WynnBuilder build:
> Brainwash
> Ahms' Remains
> Demon Tide
> Missing
> Agave
> Agave
> Enmity
> Tenuto
> Roulette []

Also very classic ETWF with Guillotine
https://wynnbuilder.github.io/#4_0u40mG0LA0Qx0TQ0qo0K40uI0b00o1B1f0u+Y1g00000
WynnBuilder build:
> Guillotine
> Soul Signal
> Flummox
> Stardew
> Draoi Fair
> Unspeakable
> Prowess
> Eyes on All
> Roulette []