The game client has no drop, vendor or quest tables, and the item isn't in the Classic database we compare with (by name). It may be new in Forever, an event or shop reward – or not in the game at all.
Teaches
Use the item to learn the recipe (requires skill 140).
Permanently enchant a Melee Weapon to have a chance to trigger Revelation when a non-periodic spell fails to critically strike. Revelation grants 100% increased critical strike chance to the next non-periodic spell cast. Revelation's chance to trigger is diminished as your critical strike chance increases.
From the game client – not every item exists in the game. Data from client build 1.60.1.70755; stats, armor and damage are computed with the client's formula tables and may differ from the game. Recipes and skill thresholds come from the client's profession tables. Classic sources are marked separately and are not verified in Forever.
Formula: Enchant Weapon - Revelation