Rayquaza-Mega @ Life Orb
Ability: Delta Stream
EVs: 252 Atk / 4 SpA / 252 Spe
Jolly Nature
- V-create
- Dragon Ascent
- Draco Meteor
- Extreme Speed
I chose Mega Rayquaza because it is a boss. It is so over powered it has its own tier and everything. And sure, the attacks aren't the greatest but it is great for starting a battle.
Groudon-Primal @ Red Orb
Ability: Desolate Land
Shiny: Yes
EVs: 252 SpA / 100 SpD / 156 Spe
Mild Nature
- Rock Polish
- Precipice Blades
- Fire Blast
- Dragon Pulse
I chose Groudon over Kyogre because Groudon is just better. Rock polish is nice because it may not be as fast as deoxys speed, it is SO close. Then the other attacks work great on him. (Yes, he can learn dragon pulse)
Necrozma-Dusk-Mane @ Ultranecrozium Z
Ability: Prism Armor
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Photon Geyser
- Earthquake
- Sunsteel Strike
- Swords Dance
I will over exaggerate a little because this is my favorite pokemon, but come on, he is a beast. With the Ultranecrozium Z he can turn into Ultra Necrozma which has the Z move "Light that Burns The Sky". All and all he is super powerful.
Marshadow @ Life Orb
Ability: Technician
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Spectral Thief
- Close Combat
- Shadow Sneak
- Rock Tomb
Because I ran out of ideas. And because Zerraora is TERRIBLE (accept in speed stat)
Arceus-Bug @ Insect Plate
Ability: Multitype
EVs: 252 Atk / 4 SpA / 252 Spe
Modest Nature
- Shadow Force
- Extreme Speed
- Swords Dance
- Judgment
This is to battle Psychic types, Dark types, and has a ground type resistance. And he is Arceus.
Zygarde-Complete @ Leftovers
Ability: Power Construct
Shiny: Yes
EVs: 4 HP / 252 Atk / 252 Spe
- Thousand Arrows
- Core Enforcer
- Dragon Dance
- Thousand Waves
To be cool. (not a good reason, I honestly just like him.)
