Mysterious Key

The Mysterious Key is a special type of Key Quest Item that is needed for the Heart of Fire Tall Tale. This Key can only be acquired as part of the Tall Tale and is used to open the entrance to Flameheart's Lair on The Devil's Thirst.l

Obtaining
The Mysterious Key is obtained during the Heart of Fire Tall Tale. The Key is found inside a Heart-shaped safe that is unlocked with a Puzzle in Stitcher Jim's Hideout at Liar's Backbone.

Trivia

 * This Key has the FLAME Skeleton Glyph on it.

Pirate Chat Wheel
Here is the Pirate Chat Wheel for the Key: