Black Clover Episode 17 English Subbed Episode Title:Destroyer.Episode Description:Lotus flees from the Bulls. Klaus sees that Mars has crystals embedded in his skin, and remembers that the Diamond Kingdom had tried to produce stronger magicians with human experimentation and fights to the death. Mars, who has a two-colour grimoire, is the result of the experiments. Yuno draws strength from his memories of Asta's determination, and refuses to surrender. When he is about to die, Asta appears and cuts the crystal sword in half...