So I have just started battling competitively, and i wanted to jump right in to OU. After tons of research and testing, I came up with this:
MamoPWN@Life Orb
Ability:Thick Fat
EV:252atk 252spd 4HP
Jolly nature (+Spe -SpA)
-Stealth Rock
-Ice Shard
-Icicle Crash
-Earthquake
This is usually my lead. sets up rocks and has great coverage and priority in ice shard. Great for taking out ttar leads. Also revenge kills dragons well. Its pretty bulky and can live a few hits pretty well, so this makes it good at setting up rocks. The EV spread let's me hit hard and fast so I can maximize damage. Thick Fat pretty muh removes a fire weakness, so I can beat out genesect and other fire attack users.
Navi@Leftovers
Ability:Natural Cure
EV:252Def 252HP 4SpDef
Bold Nature (+def -atk)
-Thunder Wave
-Heal Bell
-Giga Drain
-Recover
With this setup, Celebi makes up the base of my defence. It is very physically bulky, and can take alot. Recover is a great recovery move. Heal bell is always a good move to have, and Giga Drain is so that it is not taunt bait and adds extra recovery. Thunder wave is to spread extra status and cripple many offensive threats.
U Jelly???@Leftovers
Ability:Cursed Body
EV:248 HP 216 Def 44 Spe
Calm Nature (+SpDef -Atk)
-Taunt
-Scald
-Recover
-Will-O-Wisp
Jellicent is a great pokemon and a great compliment to celebi. it covers every weakness except dark and ghost. It can spread burn status, which is great to cripple thigs it woutang usually win against. It can tank most hits and heal itself up. It forms the second part of my defence.
DigiDuck@Eviolite
Abilty:Trace
EV: 252HP 252Def 4SpDef
Calm Nature (+SpDef -Atk)
-Recover
-Charge Beam
-Ice Beam
-Magic Coat
Classic amazing porygon2. Walls the heck out of everything. boltbeam for coverage, magic coat to troll breloom and other status inducers. Cant go wrong here. Have noticed that this tends to have no purpose other than checking offensive threats and spamming magic coat. thinking of replacing with the below heatran to still wall dragons but have an offensive purpose.
LIFE'SGOOD@Choice Scarf
Ability:Levitate
EV:252 SpAtk 252 Spe 4 HP
Modest nature (+SpA -Atk)
-Trick
-Thunderbolt
-Volt Switch
-Hydro Pump
Rotom Wash form got really good this gen. Trick and scarf are great for taking out things that wall it and crippling them, volt switch for a quick getaway, and tbolt and hpump for attack/STAB. Takes out several main treats that other team members cant. This might be replaced with he calm mind Latias at the bottom of this post
Jackal@Life Orb
Ability:Justified
EV: 252 Atk 252 Spe 4 HP
Adamant Nature (+Atk -SpAtk)
-Swords Dance
-Crunch/ (should I swap for Ice Punch?)
-Close Combat
-ExtremeSpeed/Bullet Punch
My main sweeper. I picked justified because of my team's dark weakness. this thing can wreak unprepared teams. After a SD it is hard to stop. ExtremeSpeed and CC are main attacking moves here and Crunch is for coverage. Picks off those pesky ghost types that threaten me.
Please tell me what you think and give me suggestions/ideas on what to change. Thanks in advance! :)
Possible Changes:
Instead of Rotom-W:
Latias (F) @ Leftovers
Trait: Levitate
EVs: 252 HP / 252 Spd / 4 SAtk
Timid Nature
- Psyshock
- Dragon Pulse
- Recover
- Calm Mind
Instead of Celebi:
Ferrothorn@Leftovers
Ability:Iron Barbs
EVs:252HP/48Def/208SpDef
Relaxed Nature
-Spikes
-Gyro Ball
-Power Whip
-Thunder Wave
Instead of Porygon2:
Heatran@Air Balloon
Ability: Flash Fire
Timid Nature (+Spe -Atk)
EVs:4HP/252SpAtk/252Spe
-Fire Blast/Flamethrower
-Earth Power
-Hidden Power [ICE]
-Roar
I've tested this Latias on PO and so far it hasn't been going well. Hard without Rotom-W's offensive capabilities. It just doesn't seem to fill the gap.

MamoPWN@Life Orb
Ability:Thick Fat
EV:252atk 252spd 4HP
Jolly nature (+Spe -SpA)
-Stealth Rock
-Ice Shard
-Icicle Crash
-Earthquake
This is usually my lead. sets up rocks and has great coverage and priority in ice shard. Great for taking out ttar leads. Also revenge kills dragons well. Its pretty bulky and can live a few hits pretty well, so this makes it good at setting up rocks. The EV spread let's me hit hard and fast so I can maximize damage. Thick Fat pretty muh removes a fire weakness, so I can beat out genesect and other fire attack users.

Navi@Leftovers
Ability:Natural Cure
EV:252Def 252HP 4SpDef
Bold Nature (+def -atk)
-Thunder Wave
-Heal Bell
-Giga Drain
-Recover
With this setup, Celebi makes up the base of my defence. It is very physically bulky, and can take alot. Recover is a great recovery move. Heal bell is always a good move to have, and Giga Drain is so that it is not taunt bait and adds extra recovery. Thunder wave is to spread extra status and cripple many offensive threats.

U Jelly???@Leftovers
Ability:Cursed Body
EV:248 HP 216 Def 44 Spe
Calm Nature (+SpDef -Atk)
-Taunt
-Scald
-Recover
-Will-O-Wisp
Jellicent is a great pokemon and a great compliment to celebi. it covers every weakness except dark and ghost. It can spread burn status, which is great to cripple thigs it woutang usually win against. It can tank most hits and heal itself up. It forms the second part of my defence.

DigiDuck@Eviolite
Abilty:Trace
EV: 252HP 252Def 4SpDef
Calm Nature (+SpDef -Atk)
-Recover
-Charge Beam
-Ice Beam
-Magic Coat
Classic amazing porygon2. Walls the heck out of everything. boltbeam for coverage, magic coat to troll breloom and other status inducers. Cant go wrong here. Have noticed that this tends to have no purpose other than checking offensive threats and spamming magic coat. thinking of replacing with the below heatran to still wall dragons but have an offensive purpose.
LIFE'SGOOD@Choice Scarf
Ability:Levitate
EV:252 SpAtk 252 Spe 4 HP
Modest nature (+SpA -Atk)
-Trick
-Thunderbolt
-Volt Switch
-Hydro Pump
Rotom Wash form got really good this gen. Trick and scarf are great for taking out things that wall it and crippling them, volt switch for a quick getaway, and tbolt and hpump for attack/STAB. Takes out several main treats that other team members cant. This might be replaced with he calm mind Latias at the bottom of this post

Jackal@Life Orb
Ability:Justified
EV: 252 Atk 252 Spe 4 HP
Adamant Nature (+Atk -SpAtk)
-Swords Dance
-Crunch/ (should I swap for Ice Punch?)
-Close Combat
-ExtremeSpeed/Bullet Punch
My main sweeper. I picked justified because of my team's dark weakness. this thing can wreak unprepared teams. After a SD it is hard to stop. ExtremeSpeed and CC are main attacking moves here and Crunch is for coverage. Picks off those pesky ghost types that threaten me.
Please tell me what you think and give me suggestions/ideas on what to change. Thanks in advance! :)
Possible Changes:
Instead of Rotom-W:
Latias (F) @ Leftovers
Trait: Levitate
EVs: 252 HP / 252 Spd / 4 SAtk
Timid Nature
- Psyshock
- Dragon Pulse
- Recover
- Calm Mind
Instead of Celebi:
Ferrothorn@Leftovers
Ability:Iron Barbs
EVs:252HP/48Def/208SpDef
Relaxed Nature
-Spikes
-Gyro Ball
-Power Whip
-Thunder Wave
Instead of Porygon2:
Heatran@Air Balloon
Ability: Flash Fire
Timid Nature (+Spe -Atk)
EVs:4HP/252SpAtk/252Spe
-Fire Blast/Flamethrower
-Earth Power
-Hidden Power [ICE]
-Roar
I've tested this Latias on PO and so far it hasn't been going well. Hard without Rotom-W's offensive capabilities. It just doesn't seem to fill the gap.