I like to put here some sets so...
Latias (F) @ Choice Scarf
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Draco Meteor
- Psychic / Surf / Hidden Power [Fire]
- Healing Wish
I love the versatility of this Latias. It's a very good revengekiller of other dragons and of kami with choice scarf, it can use trick on walls like Blissey, Chansey and Jirachi and when it's almost dead, it can fully recharge a teammate. This set is a good support for many team, I suggest you to try it.