This looks like a pretty interesting core but is a bit weak to Conkeldurr. If you mega evolve too early wiith Gyarados, Conk can pretty much take care of all three Pokes.This threads been pretty empty lately, so I though I'd like to share a core that I've been using recently that has had great success:
Gyarados @ Gyaradosite
Ability: Intimidate
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature
- Dragon Dance
- Waterfall
- Ice Fang
- Earthquake
Celebi @ Choice Scarf
Ability: Natural Cure
EVs: 252 Spd / 252 SAtk / 4 Atk
Hasty Nature
- Leaf Storm
- Hidden Power [Ice]
- Psychic
- U-turn
Heatran @ Air Balloon
Ability: Flash Fire
EVs: 252 SAtk / 4 SDef / 252 Spd
Timid Nature
- Earth Power
- Flamethrower
- Flash Cannon
- Ancient Power
Gyrados is the main sweeper of this core. If it can get to +2, it's game over. Heatran takes talonflame, ferrothorn, andsablye and wrecks them, allowing a much easier sweep. Celebi, completing the FWG, is a very good revenge killer and status absorber so klefki and other t-wavers cant touch gyrados. This core need little support and is very effective.
252 SpA Celebi Psychic vs. 44 HP / 212 SpD Assault Vest Conkeldurr: 176-210 (48.6 - 58%) -- 95.7% chance to 2HKO
252+ Atk Conkeldurr Knock Off (97.5 BP) vs. 0 HP / 0- Def Celebi: 272-322 (79.7 - 94.4%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Conkeldurr Mach Punch vs. 0 HP / 0- Def Celebi: 42-50 (12.3 - 14.6%)
Celebi can't survive this after rocks.