Further Investigations

Go to the Deacons of the Moon at the location marked on the map. Drink the wood elf potion and question them, as well as one of the Devotees, about the crystal. Do not drink the wood elf potion prematurely as it will only last for 20 minutes. - Question Deacon of the Moon - Question Devotee of the Moon

"I'm not sure how much we should bother Zephiria," says Nook. "We don't want to expend her generosity too soon. Let's save that card for later. First, why not try investigating around where Soni found the crystal." "To help you get the elves to speak with you, I have this!" says Nook with a bit of a flourish. "A potion that will make you appear as a wood elf. Drink it just before you speak with the Deacons of the Moon, or their apprentices. Search around for any helpful evidence as well."