Opash goal is to basically make the luxon beacon and most of his work came from thordak. Ep 89 Cr1. I got this from early 3hour of the stream when they read Opash's tome.https://www.youtube.com/watch?v=5tU-mBn4qsk&t=10442s
IF one of the beacon is in Opash/raishan lair. raishan and opash soul might be inside the beacon and the way raishan was going to revive her self is when the egg hatch her soul will be tranfer to the hatchling. but the egg was detroyed