I'm not sure who to pick; Altaria, Dragonite, or Sylveon. I've never used Altaria , but I have used Dragonite and Sylveon. I have all three of them with their Hidden Abilities. Altaria (Cloud Nine), Sylveon (Pixilate) and Dragonite (Multiscale). I also want to try out a Mega Altaria (cause it's fluffy like cotton candy). Each time I defeat the Elite Four once or twice, I like to create a new team. Sylveon was used in my previous Elite Four party, and just wrecked Drake with Moonblast. Here's my current team:
Gallade (M) @ Galladite
Ability: Steadfast
EVs: 248 HP / 8 Atk / 252 SpA
Mild Nature
- Draining Kiss
- Calm Mind
- Close Combat
- Psychic
Charizard @ Charizardite X
Ability: Blaze
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Slash
- Flare Blitz
- Flamethrower
- Fly
Serperior
Ability: Contrary
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Leaf Storm
- Leaf Blade
- Wring Out
- Giga Drain
Altaria @ Altarianite
Ability: Cloud Nine
EVs: 248 HP / 252 SpA / 8 SpD
Modest Nature
- Moonblast
- Dragon Pulse
- Perish Song
- Ice Beam
Feraligatr
Ability: Torrent
EVs: 248 HP / 252 Atk / 8 SpA
Naughty Nature
- Crunch
- Blizzard
- Slash
- Surf
Flareon
Ability: Flash Fire
EVs: 248 HP / 252 Atk / 8 SpA
Lonely Nature
- Bite
- Flare Blitz
- Lava Plume
- Swift
Yep, I know. Too many Megas. And two fire types. I like using Eeveelutions on my team. Also I might put Leftovers on someone.