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The carapace that you retrieved during Dreugh of Danrilk has given rise to some insights into recent dreugh behavior. Delis Llethri believes that a cunning hive-prince in the hive in Lake Coronati is directing the dreugh, and wishes it dead. She'll give you a Dreugh Hunter Helm (which has a Water Breathing effect) to assist with the task. However, this has an extremely limited charge, so stock up on other water breathing items before heading out. Ivrosa Llendu in the Kogotel's private quarters can supply some - including 2x Quality Restore Fatigue potions and 2x potions of Water Breathing, in addition to a Scroll of Reynos' Fins.
The hive itself is south of the channel running between Ald Iuval and Ald Marak, in the deepest part of Lake Coronati. Swim through and down into the Forsaken Fathom section, where the prince, Anshunarr, resides and slay it. As you might have gathered by now, House Redoran don't pay well, so you may also wish to raid the prince's vault in the same room.
Once ready, return to Delis for plaudits. If you haven't already, it's time to begin the duties offered by Felmaru Llendu in Ald Marak.
The following Journal ID and Index codes can be used with the Journalconsole command to manually update the quest to a certain point.
The Dreugh Prince of Lake Coronati (TR_m7_HR_AM_05)
Index
Finishes Quest
Journal Entry
10
Delis Llethri wants me to hunt down and kill a cunning hive-prince, who Ivrosa Llendu believes is orchestrating expeditions beyond the Horns, such as the one I dealt with in Danrilk Grotto. If Ivrosa's theory is correct, then I should search for it in Lake Coronati's local dreugh hive, located south of the Horns.
40
Ivrosa Llendu furnished me with supplies for my expedition into the Lake Coronati hive.
100
Finishes quest
Delis Llethri was very pleased when I informed her that I had eliminated the threat of the hive-prince, and told me that House Redoran would recall my heroism for many years to come.