[RATE MY TEAM] VGC '14 Perish Room

[Zinnia]

Here is the team:

Kecleon (M) @ Life Orb
Ability: Protean
Level: 50
EVs: 252 HP / 52 Atk / 200 Def / 4 SpD
Relaxed Nature
IVs: 0 Spe
- Skill Swap
- Sucker Punch
- Rock Slide
- Trick Room

Mawile (F) @ Mawilite
Ability: Intimidate
Level: 50
EVs: 252 HP / 252 Atk / 4 SpD
Brave Nature
IVs: 0 Spe
- Iron Head
- Protect
- Play Rough
- Sucker Punch

Hariyama (M) @ Safety Goggles
Ability: Guts
Level: 50
EVs: 60 HP / 100 Atk / 100 Def / 244 SpD / 4 Spe
Brave Nature
IVs: 0 Spe
- Fake Out
- Protect
- Knock Off
- Close Combat

Hydreigon (M) @ Choice Specs
Ability: Levitate
Level: 50
EVs: 156 HP / 252 SpA / 100 Spe
Modest Nature
IVs: 0 Atk
- Draco Meteor
- Dark Pulse
- Earth Power
- Fire Blast

Gengar (M) @ Gengarite
Ability: Levitate
Level: 50
EVs: 188 HP / 20 Def / 44 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Shadow Ball
- Perish Song
- Protect
- Disable

Gothitelle (F) @ Sitrus Berry
Ability: Shadow Tag
EVs: 252 HP / 12 Def / 244 SpD
Sassy Nature
IVs: 0 Atk / 0 Spe
- Psychic
- Protect
- Trick Room
- Heal Pulse

This team performs best in a BO3 because of the wide range of things you can accomplish with it. I really wanted to use Kecleon because it's one of my favourite pokemon and Kecleon works really well with Mega-Mawile. It sets up Trick Room allowing Mawile to wreck teams. Kecleon's Rock Slide is for one of Mawile's biggest threats in Charizard-Y and Talonflame. It can shut grab Parental Bond and Huge Power from opposing Kang's and Mawiles and finally Sucker punch allows it to function even outside of Trick Room.
The other side of the team works normally leading with Gengar and Hariyama to allow Gengar to Perish trap the opponent and bring the game down to at least a 2v2. I really like the versatility and synergy that this team possesses so let me know what you think!