Ebon

Ebon is a weapon upgrade that changes the damage type of a weapon to earth damage. This is commonly used against warriors, who have far less armor against elemental damage than physical damage; Earth is chosen because it is the rarest form of elemental damage, so targets are least likely to be carrying earth shields.

In-game description
(In place of Piercing damage: minimum-maximum, Slashing damage: minimum-maximum, or Blunt damage: minimum-maximum):
 * Earth Dmg: [minimum]-[maximum]

Upgrade components which provide this bonus

 * Axe Haft
 * Sword Hilt
 * Hammer Haft
 * Dagger Tang
 * Scythe Snathe
 * Bow String
 * Spearhead