Surf > Ice Beam on Exploud. The harder hit on Rhyperior is always welcome and Boomburst already shreds Noivern and Flygon (and the very rare Altaria). Also, use Fire Blast over Flamethrower; 85 accuracy isn't that bad.
Earthquake is redundant on Lucario, unless you're afraid of the Nidos, who are already hit hard by Ice Punch. Extreme Speed > Bullet Punch, the +2 priority is more useful than the actual coverage Bullet Punch provides:
-Swords Dance
-Close Combat
-Extreme Speed
-Crunch/Bullet Punch
Nature: Adamant
EVs: 252 Atk/4 SDef/252 Spe
Item: Life Orb
or
-Nasty Plot
-Aura Sphere
-Dark Pulse/Shadow Ball
-Vacuum Wave/Flash Cannon
Nature: Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: Life Orb
Ability: Steadfast/Inner Focus
Shadow Ball > Energy Ball on Alakazam, unless you're afraid of Gastrodon and Rhyperior. Focus Sash is also worth considering, as it guarantees Alakazam takes at least 2 hits to KO (unless it's up against Cloyster or Cinccino).
Regular Spikes would be preferred on Roserade, since the team is offensive enough not to care about the whittling effects of Toxic Spikes.
Mega Blastoise is a more reliable Rapid Spinner than Avalugg. Though it's also vulnerable to all hazards, Mega Blastoise lacks a crippling Stealth Rock weakness:
-Water Pulse/Scald/Hydro Pump
-Dark Pulse
-Aura Sphere/Ice Beam/Dragon Pulse
-Rapid Spin
Nature: Modest
EVs: 252 HP/252 Def/4 SDef
Item: Blastoisinite
You can still keep Avalugg if you feel its superior physical bulk is more useful to you.
Granbull can play some form of offensive utility (attack while supporting). Retaliate is useless:
-Play Rough
-Earthquake
-Thunder Wave
-Heal Bell (egg move; have Smeargle Sketch it for you)
Nature: Adamant
EVs: 252 HP/252 Atk/4 Def
Item: Leftovers
Ability: Intimidate