The skill Dark Barrier was practically invincible, having never been broken before. However, its strength was tied to Alex's mana. The stronger the attack it withstood, the more Mana Points it consumed.
If the attack was too powerful, it would deplete Alex's Mana Points, causing the Dark Barrier to shatter. In theory, as long as Alex had enough Mana Points, the Dark Barrier's defense was unbeatable.
Boom! Boom!
Countless wind blades struck Alex's barrier, producing loud crashes. The impact was so strong that it nearly knocked Alex and Ruby out of the sky.
Fortunately, Ruby managed to stabilize herself. To withstand this attack, Alex had used up nearly half of her Mana Points.
Although they weren't knocked down, the situation was dire. With the mage able to fly, their aerial advantage was gone.
The werewolf's expression darkened, not expecting the human mage to interfere.