Sandbag by N64Mario (Small version), featuring Megumin from Konosuba.
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Published on ● Video Link: https://www.youtube.com/watch?v=C-2hrgam37w
Looks like I'm fighting an edit of his Sandbag. In the second round, it summons Megumin, but it cost 2 power stocks in order to work. And in the third round, it summons her again.