Black Clover Episode 14: Dungeon
Episode 14 of 170 of Black Clover, aired January 9, 2018, 25 minutes. Available with English subtitles and dub where released.
Episode summary
A dungeon appeared near the border of the Clover Kingdom and the Diamond Kingdom. The dungeon is like an ancient ruin. It may contain important treasures, but they're guarded by various magical traps.