Kalalin's right hand emitted a strong glow, the very Flash Ring he had used against the Abyssal Hounds before.
He stood at the rear of the group, with all but Lancelot facing away from him, and with the giant body of the worm creature shielding Lancelot, the bright light didn't affect any of his teammates.
The worm creature's four black eyes granted it excellent dark vision, but as a consequence, it was extremely sensitive to intense light. Instinctively, it turned its head away, spraying the acid that was in its mouth onto the walls. Immediately, a hissing sound came from the tunnel's rocky walls as the soil softened like heated chocolate, slowly flowing to the ground.
Some residual acid still flew toward Kalalin's direction, but Baron, ever vigilant, blocked it all with his shield.