Ok, here's the game. Someone "sends" out a Pokemon and has it use an attack. Another must use a Pokemon that counters the attack (either by ability or type) then use an attack that counters the Pokemon sent out. For example:

Pikachu uses Thunder
Marowak uses Bone Club
Gyrados uses Surf

Get it? Marowak resists Thunder, and Bone Club is super-effective against Pikachu. Then again, Gyrados is immune to Ground attacks, so Gyrados counters Bone Club. Then Gyrados uses Surf to take out Marowak.
Please try to avoid repeating Pokemon/moves. If necessary, do so, but avoid it. Remember, every Pokemon has a weakness, so dont worry if someone uses, like, Spiritomb. Think outside the box!

Lets start with this:
Gardevoir uses Psychic

EDIT: Mystery Dungeon items are allowed, except the one-hit KO orb. Don't think that'll make a difference, though. Use the Dark/Ghost duo as little as possible. Don't forget hold items.

Because many people aren't following the rules or paying attention to the pokemon they send out,
I making a new rule that if if you send out the wrong pokemon or use the wrong move, you can no longer use that pokemon in this game, as though it had fainted, If 6 of your pokemon faint you are out of the game, like you whited out

use heatwave
i went there