Find the Moonlit Shrine on Lagon’s Isle. You have traveled to Lagon's Isle hoping to reason with Architect Liath or to speak with Lagon directly and obtain his blessing for the Lance of Heorot. The structure at the island's center known as the Moonlit Shrine is likely the best place to start.

You have traveled to Lagon's Isle hoping to reason with Architect Liath or to speak with Lagon directly. When you entered the Moonlit Shrine, Architect Liath appeared with a portal. Speak to her and try again to convince her to let you speak with Lagon.

When you entered the Moonlit Shrine on Lagon's Isle, Architect Liath told you to not follow her into Lagon's temple, warning that entering the temple will only bring death.

To obtain Lagon's blessing on the Lance of Heorot, you traveled to Lagon's Isle. When you entered the Moonlit Shrine, Architect Liath warned you to not enter Lagon's temple. Undeterred, you stepped through the portal and entered the temple at the bottom of the sea.