Get an argent dawn comission, accept "Scarlet Diversions" and pick up a Flame in a Bottle from the box right behind the guy, then accept "The so-Called Mark of the Lightbringer" and "A Plague Upon Thee"

This is all done in the bulwark, which is technically in tirisfal glades.

Click it to turn in "Better Late than Never", click it again to accept a follow up.

Click on the tent to burn it down(if you can't, then you forgot the flame in a bottle back at the bulwark) then click the banner in your inventory to plant it.

Return to the Bulwark, turn in "Scarlet Diversions" and accept "The Scourge Cauldrons" and "All Along the Watchtowers". Turn in "The Scourge Cauldrons" at the other side of the bulwark, accept "Target: Felstone Field" Keep any Bone Fragments you have, you'll need them later.

Approach the cauldron to spawn the Cauldron Lord. Kill the Caudlron Lord and loot the key. Click the cauldron and get the sample. If the cauldron lodr doesn't spawn, clear everything around the cauldron because someone might have killed him recently.

Accept the follow up "Return to the Bulwark" and return to the bulwark to turn it in. Get the next field target quest.

Same thing as before. Kill the lord, get the key, turn it in, return to the bulwark and get the next target.

Same thing again.

Same thing as all those other ones, exceept this time you do not return to the bulwark. Accept the quest, just don't turn it in yet. Run into Eastern Plaguelands and start circuit 1