This is how the team looks like:
Breloom @ Toxic Orb
Ability: Poison Heal
Level: 50
EVs: 204 HP / 248 Atk / 4 Def / 52 Spe
Adamant Nature
- Spore
- Substitute
- Leech Seed
- Giga Drain
Breloom is a stalling mon. He can use Spore to make the opponent fall asleep. Substitute is good for protection, while he uses Leech Seed and Giga Drain to heal and damage simultaneously. He also heals with Toxic Orb/Poison Heal. Grass types are a threat here!
Flygon @ Life Orb
Ability: Levitate
Level: 50
EVs: 132 HP / 124 Atk / 132 SpA / 116 Spe
- Rock Slide
- Earth Power
- Fury Cutter
- Hyper Beam
Flygon is a weakness coverage for Breloom. The first moves are for coverage, Fury Cutter is just really annoying, and Hyper Beam can get a KO in some situations. Life Orb increases damage even more. Choice scarf would be decent, but then he can't use any other moves, and that can hurt him a lot.
Metagross-Mega @ Metagrossite
Ability: Clear Body
Level: 50
EVs: 124 HP / 252 Atk / 132 Spe
Jolly Nature
- Zen Headbutt
- Bullet Punch
- Brick Break
- Sludge Bomb
This is the Metagross sweeper for the MetaLele strategy. Metagrossite is to mega evolve. zen Headbutt pairs well with Tough Claws and Psychic Terrain to do huge damage. Bullet Punch if they have really low HP. Brick Break is for coverage against Reflect, Light screen, and Dark types. I just added Sludge Bomb for fun, because I don't know what to have there.
Tapu Lele @ Red Card
Ability: Psychic Surge
Level: 50
EVs: 124 HP / 132 SpA / 252 Spe
Calm Nature
IVs: 0 Atk
- Psychic Terrain
- Nature's Madness
- Moonblast
- Psychic
Tapu Lele is a setup for Metagross. Psychic Terrain can renew the terrain multiple times (just in case). Nature's Madness is just generally useful. Moonblast and Psychic for STAB.
Sigilyph @ Flame Orb
Ability: Magic Guard
Level: 50
EVs: 4 HP / 252 Def / 252 SpD
Bold Nature
IVs: 0 Atk
- Psycho Shift
- Roost
- Stored Power
- Cosmic Power
This is another staller. He can shift the burn from the Flame Orb to the opponent. Roost heals him up. Cosmic Power raises stats. Stored Power does damage based on Cosmic's stat boosts and is able to do huge damage. Magic Guard makes him hard to hit.
Landorus-Therian (M) @ Assault Vest
Ability: Intimidate
Level: 50
EVs: 252 HP / 252 Atk / 4 Spe
Adamant Nature
- Earthquake
- Knock Off
- Swords Dance
- U-turn
Landorus T is a very typical sweeper. because he's a sweeper, I left out Stealth Rock. I also did it partly because they might take unnecessary precautions to avoid a Stealth Rock that doesn't exist. earthquake is an obvious choice, especially since the team has Flygon and Sigilyph, who both won't even be hit. Knock Off will ruin many strategies by getting rid of their item. Swords Dance makes your attacks more powerful, and U-Turn is to switch out against Ice and Water types.
So, what do you think?