Formula: Enchant Gloves - Advanced Herbalism

The Formula: Enchant Gloves - Advanced Herbalism teaches you Advanced Herbalism.

Source
This item had a chance to drop from the following bog beasts in the Swamp of Sorrows:
 * Swampwalker Elder
 * Tangled Horror
 * Swampwalker
 * Mire Lord
 * Molt Thorn