Back in Lleyta, the physician will thank you and RS gold tell you to talk with Ariannwyn. Make sure you open up your second pouch to get 12 random herbs, such as possibly torstol. Ariannwyn will inform you that your real mission is prepared, and will muster two archers and Eluned, who's to short you. You and Eluned will proceed to a new region of the woods, and Eluned will tell you about that which King Tyras was similar to before you, well, yeah. She'll mention that among his guys was spying on Lord Iorworth to learn his aims, but has gone lost.
Eluned understood this particular soldier and knows for a fact that he hasn't yet been captured... yet. Personal Tyrall will look, exhausted and hurt. The Iorworth Tracker will look right behind him and turn on protect from slipped and magic simultaneously. He'll then jump behind a barrier and start shooting you. Hide behind the huge boulder into the south and speak to Tyrall to get some armor, food, and a steel halberd, though it's better to bring your own, preferably a rune or better.
Attack the tracker with your halberd, since he's praying from ranged and magic, and is outside reach of normal melee. When his health is gone, he drinks a potion, also may use protect from melee. When he does, Eluned will shout"NOW!!" , and the archers who came with you may finish him off. Talk to Tyrall, and Eluned will teleport the two of you to Llyeta. Tyrall will state that he discovered that the mourners are gathering coal tar from the poison waste, and that Lord Iorworth's mages have throw corruption spells on several of the lamps scattered around Isafadar. Report this to Ariannwyn. You should now complete the following two missions, in any order:
1. Put on your entire mourner equipment and visit Arandar pass. Walk inside the elven town for the first time, and proceed immediately south for into the Death Guard HQ.
Go inside and talk to Ioffrdin Chillingworth, the leader of worldwide mourners. He will be angry, since apparently someone (you) has loathed part of the woods where they had been collecting herbs. Ask what the new assignment is and he will say that he wants large quantities of coal tar. Ask why and he will say that is only for himself and Lord Iorworth to understand. He will ask you to help blend up cheap OSRS gold a fresh potion of weakness, since the rebel elves have somehow (again, you) found a remedy for this.