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Speak to Osh ( 4367, -1042, 1987 ) /waypoint 4367, -1042, 1987 on the rocky overlook.
Listen to the conversation
Speak again to Osh
Kill Deltic (97^) ( 4210, -1085, 1947 ) /waypoint 4210, -1085, 1947 and loot skull of an othmir shaman from his body
Return to Osh and let him know when you are ready.
You will zone into the instance Cobalt Scar: The Plague.
Note: To exit this instance before you finish it you can use the totem at ( 4409, -1093, 1998 )
/waypoint 4409.49, -1092.98, 1997.93
Explore the village
Note:this quest step has silent updates you'll need to reach several different locations before this step will update finaly
( 4304, -1081, 1760 ) /waypoint 4303.95, -1080.98, 1760.47 Make sure you are in the instance, not in Cobalt Scar, the blue quest area is also shown in Cobalt Scar but it will not update
( 4265, -1081, 1742 ) /waypoint 4265.12, -1081.01, 1741.71
( 4346, -1082, 1775 ) /waypoint 4345.61, -1081.64, 1774.63
( 4316, -1083, 1819 ) /waypoint 4316.35, -1083.09, 1818.65
Speak to Meru ( 4299, -1080, 1764 ) /waypoint 4299, -1080, 1764
Use your Saltwater Cleansing ability on the three sick othmir near Meru
Speak to Meru again
Go to the tunnel and speak to Guard Rivas ( 4133, -1081, 2217 ) /waypoint 4133, -1081, 2217
Speak to Meru again. Kill the a dying othmir after they slay her.
Enter the tunnel, pushing past the guards (they won't stop you) and work your way through it. Some of the fallen bodies will pop up into risen othmir zombies - *Tip-put on the Turtle buff and you can just run through the tunnel, ignoring the adds until you are ported out. (A bit to the north-northeast of ( 3921, -1138, 2377 ) /waypoint 3921, -1138, 2377 you will get teleported out of the tunnel and back to Cobalt Scar)
Speak to Osh
EQ2i credits EQ2 ZAM for some of the info in this article.