You searched for Group Boosted Mode
1. group boosted mode
The purpose of group boost is to allow groups to earn more experience per
kill without putting solo players at a disadvantage. It also allows players
to create larger groups for a more social atmosphere.
Group boost works similar to the hardcore toggle by increasing a mob's
hitpoints and damage when it is attacked. Over time the attacked monster
will readjust to its normal state if no one has attacked it in a while. The
monster's damage is increased by roughly 10%. The hitpoints and experience
increase is based on the number of people in the group. Each group member
increases the hitpoints and experience by 80% up to 400%.
The amount of gold, house points, and quest points a monster gives is also
adjusted accordingly. The limit meter bonus per kill is increased as well.
Boss monsters are not affected by this group mode.