Terrible Greninja set, as you mentioned. I hope you realize that Greninja's special move pool is pretty good; it has a stronger alternative to deal with Fighting Pokemon and Mega Venusaur in Extrasensory:
-Hydro Pump
-Ice Beam
-Extrasensory
-Dark Pulse/Hidden Power (Fire/Grass)/Grass Knot/Spikes
Nature: Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: Life Orb
Ability: Protean
Noivern is generally outclassed by other offensive Dragons like Garchomp and
[email protected], due to its lack of power compared to them:
Garchomp:
Garchomp:
-Swords Dance
-Outrage/Dragon Claw
-Earthquake
-Stone Edge/Fire Fang
Nature: Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Life Orb/Lum Berry
or
-Outrage
-Earthquake
-Rock Slide/Stone Edge
-Dragon Claw/Fire Blast
Nature: Jolly/Naive
EVs: 4 HP/252 Atk/252 Spe
Item: Choice Scarf
or
-Stealth Rock
-Outrage/Dragon Claw
-Earthquake
-Fire Blast/Swords Dance
Nature: Naive/Jolly
EVs: 252 Atk/4 SAtk/252 Spe
Item: Focus Sash/Rocky Helmet/Lum Berry
or
-Stealth Rock
-Dragon Tail
-Earthquake
-Toxic/Fire Blast
Nature: Impish
EVs: 252 HP/252 Def/4 SDef
Item: Rocky Helmet
Ability: Rough Skin
Latias:
-Draco Meteor
-Psyshock/Thunderbolt
-Defog
-Healing Wish
Nature: Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: Life Orb
Latios:
-Draco Meteor
-Psyshock
-Thunderbolt/Hidden Power (Fighting)/Earthquake
-Roost/Recover/Defog
Nature: Timid/Hasty
EVs: 4 HP/252 SAtk/252 Spe
Item: Life Orb
Your current Mega Absol set struggles with physical walls. It has decent Special Attack, so it's better to squeeze in a special move like Fire Blast or Ice Beam somewhere on it:
-Sucker Punch
-Knock Off/Night Slash
-Fire Blast/Ice Beam
-Play Rough/Superpower
Nature: Naive
EVs: 252 Atk/4 SAtk/252 Spe
Item: Absolite
Ability: Justified/Super Luck
The lack of offensive STAB seriously hurts on Espeon. It's meant to support the team in this case with dual screens, rather than attacking:
-Reflect
-Light Screen
-Psyshock/Psychic/Yawn
-Baton Pass
Nature: Timid
EVs: 252 HP/4 Def/252 Spe
Item: Light Clay
Ability: Magic Bounce
Breloom should be using Technician, as Gliscor is a better Toxic Orb abuser:
-Bullet Seed
-Mach Punch
-Rock Tomb
-Spore
Nature: Adamant/Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Life Orb/Focus Sash
Ability: Technician
This team is vulnerable to Talonflame. I'd suggest dropping Cloyster for Wash Rotom or Therian Landorus to at least handle it better:
-Volt Switch
-Hydro Pump
-Will-o-Wisp
-Pain Split/Rest
Nature: Bold
EVs: 248 HP/216 Def/44 Spe
Item: Leftovers/Chesto Berry
or
-Volt Switch
-Hydro Pump
-Thunderbolt/Will-o-Wisp
-Trick
Nature: Timid/Modest
EVs: 4 Def/252 SAtk/252 Spe
Item: Choice Scarf
Therian Landorus:
-Stealth Rock
-Earthquake
-U-turn
-Stone Edge/Knock Off
Nature: Impish
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers/Rocky Helmet
or
-Earthquake
-Stone Edge
-U-turn
-Superpower/Knock Off
Nature: Jolly
EVs: 140 HP/156 Atk/212 Spe
Item: Choice Scarf
or
-Swords Dance
-Rock Polish
-Earthquake
-Stone Edge
Nature: Adamant
EVs: 48 HP/252 Atk/208 Spe
Item: Leftovers/Earth Plate/Soft Sand