Pain

Eisen ground his teeth together. He was in pain. So, so much pain. But he could get through this. He had to. If he didn't, then all of these people would die. Since he was taking regular damage, Eisen had to regularly chug some health potions instead of the mana potions, leaving him in a constant cycle of destruction and regeneration. But even then, he couldn't just leave it at this. He had to do more. From his item storage, the old man took some cubes of mana crystal. They were incredibly compressed to a degree that made them impossible to use at this point. It was just the most efficient way to store them.