The celestial gives the party a book with a way to forcibly summon Merrix d'Cannith.
The party gets with Anya at Arcanix to build a portal on their ship.
Got the Cyre refugees started. 50 initial settlers are now in the land of 'Sir Feldspar Merrlin' and being enthusiastically supported by the local residents. The plan is to move the remaining refugees that want to leave in two weeks.
The party sends a copy of the book to House Medani in the hopes of getting their help identifying the source of the chaos.
They show up at the House Medani enclave and get an audience. Medani offers to trade information.
The party works with Medani and summons Merrix. Merrix tells them everything in exchange for a quick death. Between the Lady of Pain and the Time Dragon, only endless torment awaits him otherwise.
The party agrees, and gives Merrix a quick and painless death.