Unique to Dark Isle, all creatures spawn in pods of 4. One of the four will spawn a boss creature plus two more of its own kind on death. These boss creatures always drop a trophy worth at least 13 million xp (the ones from the inner island are worth 17). Additionally, killing the boss kills the additional monsters summoned by the boss if you do not kill them first. The death is by "fate," which means that you must wait to loot them until the timer is up. There are three NPCs that accept these trophies, each gives a different item reward.