Into the Dead City is a Main Quest in Sword Coast Legends. You can start this quest by speaking to Solonil in the Market District of Luskan.
- Travel to the cemetary in the slums of Luskan
- Locate the entrance to Maferil's lair
- Find a black candle
- Find grave dust
- Find a crystal jar
- Find an ogre zombie's tooth
- Cast the spell to open Maferil's Gate
Slums head to the cemetery. It's not hard to find, the Slums aren't very big. You can get the Black Candle in one of the residences and purchase the Crystal Jar from Miranda, the Grave Dust from killing zombies in the cemetery (hit the tombstones), the Ogre Zombie's Tooth from killing the Ogre Zombie in the cemetary. Once they've all been collected head to the East Catacombs (or North Catacombs) and open Maferil's Gate.