If you play on easy, never mind me because logic teambuild isn’t necessary.
Ok, I don’t see a reason to use D.Serperior since you are not using a rain team and Machamp is outclassed by most of the strong fighting type in the game.
Delta Gardevoir is a glass canon, obviously. Use either it, D.Lucario or something else as your mega. If you play on Normal, Choice Scarf allows to outspeed most things in the game. It’s a fantastic Dragon Killer.
I never used D.Lucario, but I can tell either Earthquake or Bonemerang has nothing to do since they technically have the same BP. Consider coverage instead.
You know I don’t like manual weather setters…
And finally, choose. Either Choice Specs Hurricane or No Item Physical Accrobatics. Raichu isn’t strong enough to pull out a mixed set.
There are better fighting type options, honestly. I would go for a flame orb guts conkeldurr with facade, drain punch, poison jab, and mach punch for priority.
scarf it. bolt-beam is good, but add moonblast & psychic/shadow ball/energy ball/flash cannon/focus blast.
That will be your mega, hmm? remember: 1 stab move. get rid of bonemerang and add on drain punch or brick break coverage.
Sunny Day doesn’t really work with the rest of your team. replace solar beam with energy ball. get rid of sunny day and add on something like spikes to set up against them. I assume this is a prankster set, right?
Go physical and you will thank me later. Go for a set with Dragon Dance, Outrage, Waterfall & U-Turn to pivot.
a mixed set, eh? alright…idk. I have never used this pokemon before so I cannot recommend the usage of it. You should honestly breed a new one and go fully special with Moonblast, Air Slash, Hidden Power Ground, and Roost.
Not that bad, but it’s just that D.Raichu and D.Serperior has no big reasons from being in the team. That Conkeldurr idea is good, but in adventure, will require frequent usage of potions so I recommend the Assault Vest Iron Fist version with Drain Punch, Mac Punch, Ice Punch and Thunder Punch/Rock Slide/Knock Off.