Colin took a gentle breath, and before him, the black mist churned as if it were a demon's den choosing its next victim.
The cold air sank into his lungs with his breath, the chilly sensation invigorating his body instead.
It was like a volcano, most tranquil before an eruption.
"Let's go."
He waved his hand to bestow a Steel Temperature Resistance Field upon Marjorie, gave a low shout, and then walked directly into the black mist barrier.
This black mist barrier wasn't a Protective Shield, lacking any obstructive function.
It must have been specifically for concealing the commotion of battle.
Thus, with the witchcraft inspection Protective Shield set up by Phil outside, even a Third Level Great Wizard would unlikely detect the battle inside the Magister's Academy unless they approached closely.
Yasi had clearly made thorough preparations for this operation.
The black mist barrier wasn't merely a thin layer but spanned several meters in distance.