Raid Boss — If the character who dealt the most damage is 3 or more levels higher than the monster, the reward in items and adena is reduced. If the difference is 9 or more levels, there is no reward at all.
Raid Boss - Level 87 — The huge, evil and dangerous dinosaur Sailren, living on the Primeval Isle, was sealed inside the Lost Nest centuries ago by Shilen and the ancient Elroki warriors.
Beasts — Beasts that feed on the flesh of humanoids. Some of them are mythological creatures that lived in this world before humans appeared.
Where to find Sailren
No spawn points on the map — NPC appears through a quest or an event.