Thunderfall

 is a generic amulet that is enchanted with Destruction magic.

Enchantment

 * Shock Damage – 1 to 25 points on touch

Acquisition
This amulet appears primarily as leveled loot. There are 1,882 instances that it may be generated. There is one static occurrence on a table at Llether Vari: Enchanter in Ald'ruhn.