Thunder Capacitor
From WoWWiki
- Thunder Capacitor
- Binds when picked up
- Trinket
- Item Level 146
- Equip: You gain a Thunder Charge each time you cause a damaging spell critical strike. When you reach 4 Thunder Charges, they will release, firing a Lightning Bolt for 1181 to 1371 damage. Thunder Charge cannot be gained more often than once every 2.5 sec.
- "New and improved design!"
- Sell 4
99
64
Source
This item is a quest reward from 
[74] Something That Doesn't Melt.
