Ok if you want a physical Celebi, that set is ok, I guess. but you might want to try special Celebi, as it might work better:
If you want a special attacker Celebi, Life Orb might be a little bit better than Leftovers. Giga Drain or Leaf Storm over Seed Bomb. Maybe have Nasty Plot or Calm Mind over U-turn. Psychic over Zen Headbutt. So th set will look like this:
Celebi @ Life Orb / Trait: Natural Cure / EVs: 220 HP , 252 Special Attack , 36 Speed / Modest Nature (+SpA, -Atk)
- Calm Mind/Nasty Plot
- Leaf Storm/Giga drain
Or if you want Leftovers try this set of Smogon: Celebi @ Leftovers / Trait: Natural Cure / EVs: 252 HP , 96 Defense , 124 Special Attack , 36 Speed / Bold Nature (+Def, -Atk)
- Calm Mind
- Giga Drain
- Hidden Power Fire
Uh... physical/one move thats special Mew? Ok, that set might work, but...still..... special is great also Mew is amazing as Support for the team. This could be a support Mew:
Mew @ Leftovers / Trait: Synchronize / EVs: 252 HP , 240 Defense , 16 Speed / Bold Nature
Special Mew (Smogon):
Mew @ Life Orb/Leftovers / Triat: Synchronize / EVs: 4 HP , 252 Special Attack , 252 Speed / Timid Nature (+Spe, -Atk)
- Nasty Plot
- Aura Sphere
- Fire Blast/Shadow Ball
That's a great Trick Reuniclus you've got there, just some minor improvements.
You could consider Flame Orb over Toxic Orb. Your choice. Maybe fit Calm mind in that moveset. Definitely have Recover in there. Maybe replace Shadow Ball for it. Also, since this is a stall set, have this EV spread: 252 HP / 252 Defense / 4 Special Attack.
Also try out Smogon's Trick Room and Calm Mind sets.
That Gliscor is pretty good. Swords Dance + Earthquake is a really nice combo on Gliscor. I also have a Gliscor that works great. You might want to check it out:
Glisor @ Toxic Orb / Trait: Toxic Heal / EVs: 252 Attack , 4 Defense , 252 Speed / Adamant Nature (+Atk, -SpA)
- Swords Dance
- Ice Fang
I have Protect, though you could have Facade because of poison boost.
Again, nice Jirachi if you're going for physical. Though you could probably fit Stealth Rock in there so you can set up. I will also give you a set for a special/defensive Jirachi:
Jirachi @ Leftovers / Trait: Serene Grace / EVs: 128 Defense , 252 Special Attack , 128 Special Defense / Modest Nature (+SpA, -Atk)
- Stealth Rock
Stealth Rock is for hazards. ThunderBolt and Psychic are your two attacking moves. I feel like you don't need Wish and Protect because Jirachi doesn't have much weaknesses.
That is the normal Terrakion, and it's awesome. His attacks are just huge, and Terrakion is very powerful :D Not much to say about this guy except change the EVs to:
4 HP / 252 Attack / 252 Speed Terrakion has ok speed, so he might outspeed some non-choiced Pokemon. Other than that, great Terrakion!
That was my answer, hope it helped :D