Enchant Weapon - Greater Potency

Permanently enchant a melee weapon to increase attack power by 50, giving it a red glow. Requires a level 60 or higher item.

Source
Trainable at:
 * in Borean Tundra.
 * in Howling Fjord.
 * in Howling Fjord.
 * in Dalaran.
 * in Borean Tundra.