Help my UU team. :(

[AfroThunderRule]

Ursaring (M) @ Toxic Orb
Trait: Quick Feet
EVs: 252 Atk / 252 Spd
Adamant Nature (+Atk, -SAtk)
- Close Combat
- Crunch
- Facade
- Swords Dance

Mismagius (F) @ Leftovers
Trait: Levitate
EVs: 108 HP / 220 Spd / 180 SAtk
Timid Nature (+Spd, -Atk)
- Calm Mind
- Hidden Power [Fighting]
- Shadow Ball
- Substitute

Azumarill (F) @ Leftovers
Trait: Huge Power
EVs: 252 HP / 252 Atk / 4 Def
Adamant Nature (+Atk, -SAtk)
- Aqua Jet
- Ice Punch
- Return
- Waterfall

Clefable (M) @ Flame Orb
Trait: Magic Guard
EVs: 252 HP / 4 Def / 252 SDef
Calm Nature (+SDef, -Atk)
- Ice Beam
- Thunderbolt
- Trick
- Wish

Drapion (M) @ Leftovers
Trait: Battle Armor
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature (+Def, -SAtk)
- Crunch
- Knock Off
- Toxic Spikes
- Whirlwind

Regice @ Leftovers
Trait: Clear Body
EVs: 252 HP / 252 Def / 4 SDef
Bold Nature (+Def, -Atk)
- Ice Beam
- Rest
- Thunder Wave
- Thunderbolt


What's wrong with it.

 

[Metal~Mario]

Azumarill can learn Superpower.

WW seems awfully weird on Drapion.

 

[AfroThunderRule]

And what should I replace it with?

 

[c3gill]

Ursaring (M) @ Toxic Orb
Trait: Quick Feet
EVs: 252 Atk / 252 Spd
Adamant Nature (+Atk, -SAtk)
- Close Combat
- Crunch
- Facade
- Swords Dance

Missing some EVs. This isnt a lead..... You get outsped, flinched and then KOed by the most common lead in UU. This is a pseudo-sweeper, and should be run later in the game, after some set up.

Mismagius (F) @ Leftovers
Trait: Levitate
EVs: 108 HP / 220 Spd / 180 SAtk
Timid Nature (+Spd, -Atk)
- Calm Mind
- Hidden Power [Fighting]
- Shadow Ball
- Substitute

Typical set, nothing exciting.

Azumarill (F) @ Leftovers
Trait: Huge Power
EVs: 252 HP / 252 Atk / 4 Def
Adamant Nature (+Atk, -SAtk)
- Aqua Jet
- Ice Punch
- Return
- Waterfall

Why run both Aqua Jet and Waterfall? either throw Sub over waterfall or give it a band.

Clefable (M) @ Flame Orb
Trait: Magic Guard
EVs: 252 HP / 4 Def / 252 SDef
Calm Nature (+SDef, -Atk)
- Ice Beam
- Thunderbolt
- Trick
- Wish

There are much better items to trick, and there are much better sets to run in UU. Calm Mind Bolt Beam and heal is nice to run, whacks stuff hard. There are a lot of fun sets that can be run with Magic Guard....

Drapion (M) @ Leftovers
Trait: Battle Armor
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature (+Def, -SAtk)
- Crunch
- Knock Off
- Toxic Spikes
- Whirlwind

Toxi-Shuffler.... good!

Regice @ Leftovers
Trait: Clear Body
EVs: 252 HP / 252 Def / 4 SDef
Bold Nature (+Def, -Atk)
- Ice Beam
- Rest
- Thunder Wave
- Thunderbolt

If your going Bolt-Beam, sleep talk over T-wave.

What's wrong with it.

You went overboard on original and tried too hard. The set doesnt work well as a team, and you have too much of the same move types. From the look of the set it seems like you havent played much UU, give it a few rounds with the team and see if you can alter it to the current game.