Find out how to unlock Vanilla Scarlet Monastery during Hallow’s End in WoW!
Open Dungeon Finder and queue for The Headless Horseman.
Once defeated, he will drop a Loot-Filled Pumpkin which has a chance to contain The Scarlet Key.
Alternatively, you can purchase the key in the Auction House, but why spend gold on something you can easily farm.
Once you have the key, head to the Scarlet Monastery.
As you enter the stairs, you will see a key chain offering you a new quest. When you hand over The Scarlet Key, you can interact with the key chain to receive the The Scarlet Key buff.
To enter the Vanilla version of all four dungeons, you must go through the portals with The Scarlet Key buff.
If you again want to visit the MoP version of the dungeon, you must right-click the buff to remove it.
This is an account-wide unlock allowing you to farm items and transmogs from Vanilla Scarlet Monastery dungeons!
For more details, you can watch the following video by MrGM.
