Lv50 Team Help

Hi everyone! I have had the worst luck in getting Gaia Dragon to drop in A3 for my Odindra, so I've been trying out Lv50, but I'm not having much success with all of the damage voids. What team do y'all recommend to bring into this one? I've been trying with my go-to Mega Sherias and Edward teams, but I'm not sure which VDP sub would be the best fit (if a VDP is even necessary.) What is recommended?

Team/Box: http://imgur.com/a/fpdUOzl

Thanks for the help!