Use Haste, Berserk, Protect on all
Mad Rush (とつげき, Totsugeki?) is an ability in Final Fantasy VIII and Final Fantasy X-2.
VIII Mad Rush is a command ability that can be learned by the Guardian Forces Ifrit and Eden. When cast, it puts all party members into the Haste, Protect and Berserk statuses, even those with a 100% status defense against Berserk. It can be useful if the player intends to defeat high HP enemies using only physical attacks, but can be a risky move as the Haste, Shell and Protect statuses will eventually lapse, leaving the player with no control over their party.
X-2 The original ability is renamed Assault in the English localization. It casts Berserk, Haste, Shell, and Protect on the party and is learned by the Warrior dressphere for 100 AP after learning Sentinel first.
The Berserker dressphere can learn an ability called Mad Rush as part of the Instinct skillset. Cripple must be learned first to learn Mad Rush. It takes 30 AP to master it. The user inflicts a powerful critical hit on the enemy for the cost of 6 MP, but it has a low success rate.