“When the owner of the four-leaf grimoire is filled with despair, the five-leaf clover grimoire will be born.” Patry is filled with despair after learning he had been manipulated by the devil all this time and turns into a dark elf. He then starts attacking Yuno and Asta, fueled by nothing but hatred and malice. Somehow, becoming a dark elf had made Patry even stronger, which gives Yuno and Asta an even harder time fighting him. Then Captain Nozel appears before them. Nozel happens to have the best magical attribute to fight against light magic, mercury magic.
you shouldn't just despair and run away!
!لا يجدر بك أن تيأس وتهرب
dann rennt man doch nicht
verzweifelt auf halben Wege davon!
¡no caigas en la desesperación y huyas!
¡no caigas en la desesperación y huyas!
que tu dois te morfondre
et te cacher dans ton coin !
ma questo non ti dà il diritto 
di disperarti e scappare!
não é motivo para cair
no desespero e fugir!
это не повод отчаиваться
и бежать посреди пути!