Dirty Tricks Vs Tricks
Arthur knew he had already ruined his enemy plans, but that didn't mean everything was going to be fine.
There was still one single thing he had to do before that. These grandmasters were a thorn in his back.
After all there was still one shield which they could activate, the last shield.
If that shield got activated, then all of the forces would be trapped in here again. Of course this time Arthur was sure things wouldn't be as bitter as it was before, but he would still have lost much more.
"Tell Amera and others to target the portals," Arthur appeared inside the seemingly vacant castle, "let us attack them from all directions."
He wanted to bring chaos in the enemy ranks. If he attacked the grandmasters here alone, he wouldn't guarantee his sinister enemy to pull another dirty trick of his.