You delicately top off the empty bottle; a sample of the foul substance that churns under the platform of the cauldron now oozes back and forth inside the fragile glass container.
With the poison in hand, it is time to return to High Priestess MacDonnell at Chillwind Camp to complete the mission.
Another finely executed mission, <name>! This makes three cauldrons available to us to turn against the Scourge. If Kel'Thuzad's necromantic dominance over these lands wasn't as strong as it currently is, I'd dare say you'd shut them down completely!
Alchemist Arbington will have a report on what this cauldron - as well as the other cauldrons subverted - will require to deliver our counter agent to the plague. With that, the time has come to bring the last cauldron of the west under our influence!