Hill looked at the black mass of mages flying out in the sky and was somewhat surprised.
The mages of the Undead Tribe rarely float in the sky to fight... How to say it, the Flight Art is a spell that requires attention to mana consumption and needs to be replenished in time within its duration... Of course, there are quite a few in the Undead Tribe who can remember these things during battle, but more actually cannot.
It's not that they haven't initiated flying mage battles... but what remains are just bursts of laughter from onlookers.
The Undead Tribe is also very aware of this, and basically won't persist in such unnecessary exhausting activities... For them, the Flight Art is more commonly used in daily entertainment.
So, for the mages to have all taken on the combat posture of flying, it must be a requirement from the Temporal Artifact or William's side.
William definitely wants to trap all the necromancers who entered underground, keeping them there!
