If the mana is exhausted, it means all Mages become crippled.
"You guys take turns sitting down to recover your mana, Scoundrel, you start!" Nie Yan thought for a moment and said in the group chat. That's indeed a strategy.
"Alright." The Undying Scoundrel nodded in agreement, quickly backed away to the side, sat down on an empty spot nearby, drank a bottle of Magic Spring Water, and began to recover his health.
After the Undying Scoundrel's mana was fully restored, he immediately stood up and joined the battle. Then, Blowhard Summer Bug ran to recover mana. After a while, another person swapped in, so although Diracru's health decreased much slower, their sustainability improved considerably, and the mana consumption wasn't as fast as before.
Diracru's roars echoed for a long time in this space, and the battle lasted roughly three days. Diracru's health finally dropped to just 20% remaining.