"You're courting your own death." Moment of Splendor said to the others: "You guys better stop, it's meaningless and merely wastes experience."
After killing the boss just now, almost everyone had leveled up twice, initially, the experience from this boss wasn't so terrifying.
It was due to various reasons. Firstly, the boss itself was a Warcraft, thus it provided a super-large amount of experience. According to the rules of the ancient god, even if one person kills this boss, the experience will only be so much, and if many people kill it, each person gains the same amount of experience.
This is the leveling mechanism for field bosses. The more people fighting, the more difficult it becomes, but the rewards received are also more substantial.