: The anti-bird Nero tries to lead Asta toward a specific spot on the wall, but Asta is too distracted by the treasure to understand. Mars Returns
Despite his victory, Asta collapses at the end of the episode. He had been fighting through the pain of a serious wound to his stomach inflicted by one of Mars' diamond harpes earlier in the skirmish. Episode 18 | Black Clover Wiki | Fandom Black Clover (TV) Episode 18
As Mars turns his sights on the injured girls, Asta is thrown through a wall into a separate chamber. Nero finds him and leads him to a dirt-covered, rusted sword. : The anti-bird Nero tries to lead Asta
The celebration is short-lived when Mars suddenly breaks free, using fire-based healing magic to recover from his previous wounds. This reveals a shocking anomaly: Mars possesses two different elemental affinities— and Fire —something typically impossible for a single mage. Episode 18 | Black Clover Wiki | Fandom