
This key is used at the Chapel in Silverglen to access Loic's office that is located beneath the church.
At the end of The Initiation you would have received a key.
Now that you are in, the infiltrating can begin!. Make your way to the town of Silverglen and speak with the Priest Loic and complete The Initiation quest to first become an Immaculate. Initiate this quest by running into Samid the first time you enter Luculla Forest.
She will combine the Vial of Leandra's Blood with Leandra's Spell ( which you obtain from Investigating the Mines) to create the Death Knight Bane Skillbook. Return to Homestead and talk to Icara, the White Witch you rescued earlier from Find the Witch. Take Leandra's Diary and a Vial of Leandra's Blood from the secret room. Defeat the summons and chase down Mangoth to a secret room at the lower floor. Stop Mangoth from sacrificing human to create Blood Stones. Use the Portal to teleport to Luculla Forest North, near the Immaculate village of Sacred Stone. Use they Key you obtained from Loic to enter the basement of the Chapel in Silverglen. Speak with Loic and complete The Initiation. Meet Samid when you first enter Luculla Forest and hear his story. NOTE: This quest is intended to be the final quest in the Luculla Forest region therefore it is recommended to complete all other Main Quests in this region first so as to avoid any difficulties. You can initiate this quest by speaking with Samid, the distressed Immaculate who tells you of many atrocities that the Immaculates are committing with the use of Sourcery. Therefore you need to complete The Initiation before you proceed with this quest*. To infiltrate the Immaculates, you first need to join them. Infiltrating the Immaculates is a main Quest in Divinity: Original Sin Enhanced Edition.