Pokemon I liked, put together

[Zetch]

I just wanted to try some OU with random pokemon I liked, but it turned out to be a good team as I'm currently with a score of 21-3 on pokemon showdown, which is something I never expected.

Why I'm making this thread in the first place is because I would love to get some criticism on what to change/improve in my team as I'm aware it's nothing close to perfection.

It is a hyper offensive team based on sacrificing the least viable member to revenge kill/hurt something greatly with the incomming pokemon.

Landorus (M) @ Expert Belt
Trait: Sheer Force
EVs: 252 Spd / 252 SAtk / 4 Atk
Mild Nature
- Psychic
- Hidden Power [Ice]
- Earth Power
- U-turn

Mamoswine @ Life Orb
Trait: Thick Fat
EVs: 252 Spd / 252 Atk / 4 Def
Adamant Nature
- Icicle Crash
- Earthquake
- Ice Shard
- Stealth Rock

Terrakion @ Choice Scarf
Trait: Justified
EVs: 252 Spd / 252 Atk / 4 SDef
Jolly Nature
- Close Combat
- X-Scissor
- Earthquake
- Stone Edge

Vaporeon @ Leftovers
Trait: Water Absorb
EVs: 252 Def / 252 HP / 4 SAtk
Bold Nature
- Heal Bell
- Wish
- Scald
- Roar

Genesect @ Choice Scarf
Trait: Download
EVs: 252 SAtk / 252 Spd / 4 Atk
Hasty Nature
- Bug Buzz
- Thunderbolt
- Ice Beam
- U-turn

Dragonite @ Leftovers
Trait: Multiscale
EVs: 252 SDef / 252 HP / 4 Atk
Careful Nature
- Thunder Wave
- Dragon Tail
- Substitute
- Roost

 

[mklo14]

read the rmt rules or this'll get locked!

 

[Zetch]

read the rmt rules or this'll get locked!

I'm aware of the fact that I should add some words, but as i stated in the OP, I just threw something together that happened to work out really well.

My intention wasn't to make valid team to post here at all, but as i laddered to 1850, I thought I'd ask for your advice to get even further.

I'm fairly new to the whole teambuilding aspect of pokemon in general.