Selena build opinions

I'd say it's better to focus on her speed or defense more than on her attack. +spd Wo Dao is definitely a good weapon for her, but have you considered running a speed seal or steady breath with ignis or aether?

Seems like a pretty standard build. I would almost consider an HP bane instead of RES because RES is a superbane and it's actually a pretty good stat for her to help duel dragons, and an HP bane makes it easier for her to get below the Wrath threshold.

If you're looking for options, maybe Ardent Sacrifice, Bonfire, Brazen Atk/Spd (or Brazen Atk/Def since it's available on Ares), and Desperation (or Wrath). Ardent Sac would instantly put her in Brazen/Desperation range if she has an HP bane. She really needs the extra ATK from the Brazen, and if she's running Brazen Atk/Spd and Desperation then the HP bane doesn't matter since she won't be taking many hits anyway. Bonfire since her DEF is pretty high and if she's using Desperation then she won't trigger Moonbow in one round. Moonbow is great if you want to keep Wrath.