If you still have one or even both of the two mandatory bosses left to beat in Elden Ring before ... to getting a fast pass to Mohg, since Varre gives you an item to teleport to the area.

Trident of Mohg, Lord of Blood ... by completing White Mask Varré 's questline, or by taking the teleporter portal near the Yelough Anix Ruins in the Consecrated Snowfield, an area that can ...

Remembrance of Mohg, Lord of Blood ... lead you directly to the foot of the Mohgwyn Dynasty Mausoleum, but the teleporter portal will bring you near the Palace Ledge-Approach site of grace.