Raven Merge project. Build?

One of the most common Raven builds now is probably giving him Life and Death (weapon and A slot). People also give him Desperation, so that's also a thing.

C and S slot are flexible, but the S would probably be Heavy Blade or something.

I'm planning to build a +atk -res raven.
Here is the build
Weapon:Basilikos(LND)
Special:Luna
A:Fury
B:Vantage
C:Felxible
Seal:+atk

The idea here is that when raven is attacked with low hp and luna is ready raven will be able to kill the enemy with vantage.

If life and death ever becomes a seal, I already have planned to build a +atk-res Raven with LnD 9, desperation, threaten def, ardent sacrifice/reciprocal aid, and glimmer. He would hit 68/50 before buffs.

Standard offensive build: since he's not +spd give him Life and Death and Desperation. Or course go Effect Refine Basilikos. From there it's up to preference; though Reposition is the best assist in the game, Luna for me works out for Raven best, and his default Threaten Defense is already perfect.
Highly recommend Heavy Blade seal of course. Also, if you happen to have a spare Winter Robin, Brazen Atk/Spd is easily his best A skill. Life and Death just happens to be more obtainable and almost as good.
If you decide to merge this one into a +spd Raven instead, you can run Fury.