Useful Cards, Cuprit

Arkhen quickly took out his Deck of Mystic Cards while the shadow guards surrounded them to protect them.

All shadow guards knew some kind of formation as they created a light blue barrier with a honeycomb design while five rays of snake-like light roamed over the barrier.

Soon, they saw eight people coming. One of them was 6th class while the rest were 5th class.

"Five shadow guards and two of them are 6th class while the other three are 5th class… Boys, it's going to be a bit tough, but we outnumber them, and our overall power is higher," a slender man with a long dagger said as he licked his lips. "Slaughter them!"

This man was the leader of this group. A 6th-class powerhouse.

[My lord. Metamorphic cards won't work on any of them, not even for 0.5 seconds. Your EP is too low to empower cards to take their effect on people at 5th-class or higher].