This is a new type of special attack accessed after the Team Badge is obtained. The player has to build this up in dungeons, using moves and defeating wild Pokémon. Once it's built up, the team attack logo will be displayed on the touch screen when L is pressed. It emits a green light and is significantly stronger than regular moves, attacking all enemies in the room and restoring HP, increasing accuracy, etc.
When there are no enemies in the room, the attack fails; however, the unused attack can still be performed while in the same dungeon at a later time.