(Stopping that one preliminary attack that wasn’t even a martial skill or anything cost me fifty thousand Mana.)

Vandalieu had been using his Mana excessively since the battle began; he had already spent half of it. He still had more than 50,000,000 remaining, but… If Bugogan attacked with a martial skill, it would cost tens of thousands of Mana to block it… Possibly even hundreds of thousands.

(Chapter 21)