Although the damage bonus to Omega moves from Skyfall tends to make people build towards the Death arcana and alternating Omegas—and that’s clearly valid—I think Selene is possibly better built using Origination and added flat damage on attack/special.
The real draw of this is getting Origination applied to Skyfall, which is a huge chunk of damage on its own.
Here’s a surface run showcasing that philosophy, with Hestia and Zeus on attack/special. I’ve got the Night arcana on mostly to activate Moon for more Hexes.
0:00 Arcana and such
0:11 Ephyra
7:00 Polyphemus
8:27 Rift of Thessaly
15:03 Eris
16:11 Mount Olympus
23:34 Prometheus
25:16 Victory!
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