With everything that was happening, the fact that he was here with a practitioner of the Frost Mourn Meditation Art was just the icing on the cake.
It would seem that in the time since he had gained the Endless Vault Meditation Art, someone else had been able to gain access to this power, and now they were here to challenge him.
This should not be the entire story because there was surely something else happening above him, his mother, the planets, the signs of battle, and the Time Stop effect, so many things were simultaneously taking place, but for now, he had to focus on overcoming this hurdle first.
He did not know what abilities the Supreme Meditation Art would grant to a Mage, but he knew that for him to win, he had to fight in a way that a Mage could not easily anticipate. His opponent had already shown certain abilities that he was not sure came from her Meditation Art, to win this fight, he must make sure she never had the chance to make his move.