A few minutes before Basil's encounter with Eugene's team and the Paladins.
Basil was thinking about the progress of his plan, while running running toward the place that would lead him to the place where he could finally execute his plan. He had put anyone who could hamper his plan aside, so he was now ready to execute Eugene.
The place Basil was heading to was nothing but an empty, hidden plain. What made it special was only the fact that there was a Magic Circle for [Teleportation] carved on the ground that could teleport him to the place where he could execute Eugene.
He had prepared it way before he had met Eugene, but in truth, he didn't prepare it for Eugene. He had actually prepared the place for 'Just in case' situations, but since he had met Eugene sooner than he had expected, it conveniently changed function.