Rate my OU Team

[RoreyG]

Ace (Talonflame) (M) @ Life Orb
Ability: Gale Wings
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Flare Blitz
- Brave Bird
- Roost
- Swords Dance

Flo (Azumarill) (F) @ Leftovers
Ability: Huge Power
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Belly Drum
- Aqua Jet
- Play Rough
- Superpower

Venom (Gliscor) (M) @ Toxic Orb
Ability: Poison Heal
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Cross Poison
- Earthquake
- Stone Edge
- Hone Claws

Merlin (Alakazam-Mega) (M) @ Alakazite
Ability: Trace
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Psychic
- Shadow Ball
- Dazzling Gleam
- Shock Wave

Dayne (Dragonite) (M) @ Weakness Policy
Ability: Multiscale
EVs: 252 Atk / 4 SpA / 252 Spe
Jolly Nature
- Dragon Claw
- Aerial Ace
- Iron Head
- Roost

Tank (Excadrill) (M) @ Assault Vest
Ability: Mold Breaker
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Earthquake
- Iron Head
- Brick Break
- Rapid Spin

 

[PlatinumDude]

Talonflame's last 4 EVs should go into Defense, since putting them in HP makes its HP even, meaning it dies to 2 Stealth Rock switch-ins.

Sitrus Berry is preferred over Leftovers on Belly Drum Azumarill, so it can restore some HP upon using Belly Drum. 164 Speed EVs allow Azumarill to outspeed minimum Speed base 70s.

Gliscor should stick to defensive roles only. It's badly outclassed in offensive roles:
-Toxic
-Protect
-Earthquake
-Substitute/Knock Off
Nature: Impish
EVs: 252 HP/56 Def/200 Spe
Item: Toxic Orb
Ability: Poison Heal

or
-Earthquake
-Acrobatics
-Taunt/Toxic/Fling/Stealth Rock
-Roost
Nature: Impish
EVs: 252 HP/56 Def/200 Spe
Item: Toxic Orb
Ability: Poison Heal

or
-Earthquake/Knock Off
-Toxic/Knock Off/Stealth Rock
-Taunt/Stealth Rock
-Roost
Nature: Careful
EVs: 252 HP/184 SDef/72 Spe
Item: Toxic Orb
Ability: Poison Heal

Mega Alakazam can get away with a Modest nature because it still outspeeds +Speed base 130s with Modest:
-Psychic
-Shadow Ball
-Focus Blast
-Hidden Power (Fire/Ice)/Taunt/Substitute/Thunder Wave
Nature: Modest
EVs: 4 HP/252 SAtk/252 Spe
Item: Alakazite
Ability: Magic Guard (pre-Mega)

While it seems tempting to have Dragonite use Weakness Policy with Multiscale, it's not worth it in the end because since you lack Dragon Dance, it can get revenge killed if you can't Roost in time. Also, Dragonite's coverage moves are rather weak (Aerial Ace is a weak STAB and only Mega Aerodactyl gets away with it because of Tough Claws) and outside of Fairies, Iron Head is useless. Also, Dragonite can hit Fairies hard with Earthquake if needed and it loves the priority Extreme Speed provides:
-Outrage
-Extreme Speed
-Thunder Punch
-Superpower
Nature: Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Choice Band
Ability: Multiscale

or
-Dragon Dance
-Outrage
-Extreme Speed
-Earthquake/Fire Punch
Nature: Adamant
EVs: 252 Atk/4 Def/252 Spe
Item: Lum Berry
Ability: Multiscale

Brick Break is redundant with Earthquake on Excadrill, making the former useless. Drop it for Rock Slide, which is useful for nailing Mega Pinsir, Talonflame and Charizard (Y) on the switch. Assault Vest Excadrill uses an Adamant nature with a bulky spread of 120 HP/136 Atk/252 SDef.

 

[Nah]

One other thing is that you'll wanna give Talonflame a different item. Talonflame already has enough HP issues with Stealth Rock everywhere and its STABs doing recoil damage. Roost helps, but that particular set is kinda frail and Life Orb damage doesn't help with that. You could use a Flame Plate, Sharp Beak, or Expert Belt.