This is how Twilight goes berserk in Adventures in Camp Everfree.
[Twilight's eyes turn red and fires but Thunderwing dodges.]
Rainbow Dash: No. Stop Twilight.
[Twilight shoves Rainbow Dash out of her way and goes after Thunderwing and tries to blast him but Pinkie Pie jumps on her. Twilight throws Pinkie Pie off of her and goes after Thunderwing again. Rarity, Applejack, and Fluttershy try to stop her. Twilight knocks Rarity away from her, pushes Applejack away from her, and throws Fluttershy away from her and spots Thunderwing flying away and tries to blast him but her eyes return to normal.]