Limit?

Magic Bullets flew around the mist and hit the zombies from all directions. Theo even targeted their holes specifically so that the zombies stopped and covered them.

"Gravity," Isaac shouted, warning Theo about his skill.

Theo nodded and took this opportunity to kill all the zombies.

*Sigh!* Isaac let out a long sigh while wiping his sweat. "This has gotten a bit harder. I don't think we can stay too long in this area."

"Just a bit more." Theo shook his head. Although he felt a bit tired to break through several lines, which hosted multiple 1000 Years Old Zombies, he needed to do it.

Behind these few tracks were a chunk of Magic Power that Theo felt contained multiple artifacts.

"How many more?"

"Two." Theo turned around and said, "Should we use the artifacts first?"