SM OU Wanting to submit this team for a potential draft tourney - suggestions appreciated!

[ipsi]

Tapu Koko @ Choice Specs
Ability: Electric Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunderbolt
- Dazzling Gleam
- Volt Switch
- Grass Knot

Alakazam @ Alakazite
Ability: Magic Guard
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Psychic
- Focus Blast
- Shadow Ball
- Calm Mind

The Core (Manaphy) @ Leftovers
Ability: Hydration
EVs: 100 HP / 156 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Substitute
- Tail Glow
- Scald
- Ice Beam

Landorus-Therian (M) @ Rockium Z
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Hasty Nature
- Swords Dance
- Earthquake
- Stone Edge
- Defog

Tangrowth @ Assault Vest
Ability: Regenerator
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Giga Drain
- Hidden Power [Fire]
- Sludge Bomb
- Endeavor

Tyranitar @ Leftovers
Ability: Sand Stream
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Pursuit
- Earthquake
- Ice Punch
- Dragon Dance

I feel like I might need a cleric (Chansey) or better hazard control (skarm), but don't know what to change.

I've never gotten very far on the ladder because I don't play often, but I love the game. Any help is much loved!

 

[wisdom dog]

http://www.smogon.com/forums/threads/rmt-rules-guidelines-must-read-before-posting-an-rmt.3588792
You need to have detailed descriptions about the individual mons, or your thread will likely be locked
:]

 

[IronBullet]

Welcome to Smogon! I'm locking your RMT for the time being as the forum rules require that you provide in-depth descriptions for each Pokemon to explain their roles. Please read the rules carefully and take a look at Team Showcase to see the level of detail we require. PM me with updated descriptions and I'll be happy to unlock this.