“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.
Honestly... I've never met 
such a foolish human before.
.يا إلهي... لم ألتق ببشري غبي مثلك من قبل
Meine Güte … Ich habe noch nie
einen solch einfältigen Menschen gesehen.
Nunca vi a un humano
tan estúpido como tú.
Nunca había visto
a un humano tan tonto como tú.
Bon sang…
Santo cielo... mai incontrato 
un umano così sciocco.
Sinceramente... Eu nunca
conheci um humano tão tolo.
Честное слово,