Just to check, Ryan opened the Dungeon Shop and checked for the skill, but he didn't find it… Ryan didn't want to believe that skill like that would cost more than two million coins.
"I don't know how this system measures the price of skills, but you shouldn't think it will be cheap," Femradiel said. "This skill can nullify all skills that affect your mind in the exchange of your mana. Illusion magic, debuffs that would affect your mind such as Charm, and skills that might read the info about your or your items won't work while you keep it active."
"So, it is that useful, huh," Ryan said. "Anyway, how much more mana you will need for me to deserve that skill."
"Let me do some math here," Femradiel said. "Based on the current level of the skill, the amount of mana needed to level up the skill, the percentage in which the cost of the level up increased… you will need to kill 25.369 more slimes or wait 281 hours."
