"This is an Infuser," Kyle said as he showed everyone a long needle with a handle.
The ten Fighters in front of him looked at the long needle with interest.
"That's how we harden the walls?" one of them asked.
Kyle nodded. "Correct," he said before putting the needle on one of the walls of the mine. "You put the Infuser onto the wall and push your Ether into it. The Infuser has an internal transformer, which means it also works with Neutral Ether. The Infuser transforms the Neutral Ether into Earth Ether."
"What if we already use Earth Ether?" a Fighter with a heavy brown shield asked.
"In that case, you can directly use Earth Ether. If you can use Earth Ether, you will be twice as efficient," Kyle said.
The Fighters nodded and looked at a couple of people with an Earth Affinity.
Kyle had led the group of Fighters through the entire mine over the past hours, teaching them the basics of how to run a mine.
