Taint is an uncommon Peerless Reagent that is used in the creation of certain Craftable Artifacts. It spawns on the corpses of Peerless monsters. There are two subtypes: reagents that only spawn on a specific peerless boss, and ones that can spawn on every peerless boss. Taint is of the later type.

Taint is used along with other ingredients to create the following items:

Bramble Coat Bramble Coat
Cold Forged Blade Cold Forged Blade
Faerie Fire Faerie Fire
Phantom Staff Phantom Staff
Scrapper's Compendium Scrapper's Compendium
Stitcher's Mittens Stitcher's Mittens
Darkwood Crown Darkwood Crown
Darkwood Pauldrons Darkwood Pauldrons