Moisty Mire is an Uncommon Fortnite Spray. Moisty Mire was available via the Battle Pass during Season 10 and could be unlocked at Tier 14.
How-to Get the Moisty Mire Spray
Moisty Mire is part of Season 10. If that season is still currently in the game, you can obtain this item by purchasing and/or leveling up your Battle Pass.