SM OU I've gotten to 1500 elo with this team (so far)

[FrozenRain1]

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Proof:

Heatran @ Leftovers
Ability: Flash Fire
EVs: 4 Def / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Magma Storm
- Earth Power
- Stealth Rock
- Taunt
Type Coverage/Threat Checker/Stall Breaker




Clefable @ Leftovers
Ability: Unaware
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Moonblast
- Protect
- Wish
- Heal Bell
Physical Wall/Setup Counter/Cleric

Ferrothorn @ Leftovers
Ability: Iron Barbs
EVs: 252 HP / 24 Def / 232 SpD
Sassy Nature
IVs: 0 Spe
- Spikes
- Leech Seed
- Gyro Ball
- Power Whip
Special Wall

Tapu Koko @ Electrium Z
Ability: Electric Surge
EVs: 20 HP / 252 SpA / 20 SpD / 216 Spe
Timid Nature
- Thunderbolt
- Defog
- Roost
- U-turn
Pivot

Latias @ Latiasite
Ability: Levitate
EVs: 252 HP / 4 Def / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Recover
- Stored Power
- Ice Beam
Secondary Win Condition/Setup Sweeper/Staller

Hawlucha @ Electric Seed
Ability: Unburden
EVs: 96 HP / 252 Atk / 36 SpD / 124 Spe
Adamant Nature
- Acrobatics
- Swords Dance
- High Jump Kick
- Roost
Primary Win Condition/Sweeper

Notes: This is my first post on this thread and I am still not aware of all the Pokemon role/meta terminology so please no flame

My thoughts on the team: Generally how I play this team is I get a kill or two(hopefully threats to the win conditions) before sending in Hawlucha to sweep. This is probably a no brainer, but you should almost never switch into Hawlucha or fight with him when you are slower. When facing some tough threats it is possible to tank a hit or two with Tapu KoKo to force a switch out, and then gain switch in priority with U-turn. Latias can stall out some wallers with recover if they don't run toxic while setting up at the same time. Unaware Clefable catches many players off-guard. Due to the offensive, slow, and lack of priority nature of the team good prediction skills and enemy Pokemon move set knowledge is important.

 

[FrozenRain1]

I forgot to add some threats to the team so here they are: Magnezone(really bad match up),Victini, Magearna(Heatran can tank a focus blast/aura sphere or you can stall with Latias calm mind recover), and Volcanion(better save Tapu Koko)