In order to be eligible for Asarki's party. Yumiro invited Elijah to show her power so that he could judge if her power was enough to fight with his side. Nevertheless, he doesn't care what kind of power this woman had, he just said these words earlier to see her determination.
Moreover, Asarki was the one who much knew about Elijah's strength for being a mage so she was certain Grim would surely like her. But what she could do? She was the one who suggested this plan, aside from that, they needed a strong adventurer before they climbs to the Heaven's Dream.
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To begin with, Elijah was standing in the middle of the straight course. At the same time, she was concentrating her magical power all over her body.
[Orsola vine!]
And then, all of a sudden, a huge green magic circle appeared under their feet. It was large enough to reach the place where Asarki, Hippie, and Grim were standing which was around 21 meters away.