Charge!

The Cavern Slaves let out a weird shriek. They were afraid of the Intermediate Spells, yet they were still lunging forward without hesitation. It appeared that they were using their own flesh to clear the path for their comrades.

The Intermediate Spells were powerful, but they were not enough to hold off the Cavern Slaves' kamikaze push. The Cavern Slaves rapidly drew nearer to the group of students.

"Attack, kill them all, we can't let them get any closer! Otherwise, we will be buried here!" Lu Zhenghe yelled.

Everyone no longer dared to conserve their magic, casting their spells continuously, with no disconnection between the projectiles. Fire Burst, Earth Wave, Lightning Strike, Brilliant Light; the glows emitted from each Element lit up the pitch-black tunnel like a violent rainbow, together with explosions, mudslides, frost, blinding flashes, vine whips...