Quest 212

Walkthrough

 * After accepting the quest, head back to Castle Glen Town and take the west exit to Glen West.
 * From there, head Southwest to Gregor Cavern and enter it. You will get a cutscene.
 * They will ask for Antidote Herb and a Moonwort Bulb.
 * You can find the Bulb on the gathering sparklies outside in the zone, and the ghouls nearby can drop the antidote, or you can just get both from Bazaar.
 * Return to them once you have it. Then back to the Castle Gartlant throne room for your reward.