Hexen Bee
Those two Adept rankers had both fallen victim to the illusion caused by that vial break. It was the same D-Rank illusion bomb a certain someone had received as their reward. The last of them.
The cause of their current state was watching them from far in the sky, right over their battlefield.
Eren was standing at the edge of a long wooden broomstick that had been suspended still in the air. It had runic symbols on it that had been lit up due to the artefact being imbued with mana.
This was Layla's artefact and she was sitting carelessly on the other end of the broom, reading her book. Her legs were swinging as she kept on flipping pages. The young girl didn't even look down when the potion was detonated.
Eren had only requested Layla to give him a ride on her artefact and fly over the Adept rankers' battlefield. He wanted her to stabilize the artefact so that he could watch the battle from afar while maintaining a safe distance.