[RATE MY TEAM] A UU Team Build

[Allegro]

I would really appreciate it if someone critiqued one of the UU teams I am working on! i would like to hear/see what moves I can substitute, any members to replace, and anything of that effect. The complete build for the team is right here:

Violence (Sceptile) (M) @ Sceptilite
Ability: Overgrow
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Substitute
- Giga Drain
- Dragon Pulse
- Focus Blast

Forretress (F) @ Leftovers
Ability: Sturdy
EVs: 252 HP / 252 Def / 4 SpD
Relaxed Nature
- Rapid Spin
- Stealth Rock
- Volt Switch
- Gyro Ball

Delinquent (Krookodile) (F) @ Dread Plate
Ability: Intimidate
Shiny: Yes
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Knock Off
- Earthquake
- Taunt
- Pursuit

Blissey @ Leftovers
Ability: Natural Cure
IVs: 0 Atk
- Wish
- Soft-Boiled
- Seismic Toss
- Heal Bell

Tornadus @ Life Orb
Ability: Prankster
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Hurricane
- Focus Blast
- Grass Knot
- Tailwind

Mamoswine (M) @ Focus Sash
Ability: Oblivious
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Stealth Rock
- Ice Shard
- Earthquake
- Endeavor