Lightning Hammer

Overview
The Lightning Hammer is a legendary level 50 hammer. It has a 12% critical chance and a base damage of 420. When upgraded to +20, it deals 840 damage.

It is dropped by the Floor 5 boss, Sa'jun the Centurian Chieftain and has a drop rate of 0.1%.

Trivia

 * It is one of the two hammers that can be seen being held by Sa'jun the Centurian Chieftain, the floor 5 boss.
 * A reference to the Lightning Hammer were to be once shown in the SAO II anime, (Mother's Rosario). When the protagonists defeated the King of Giants, they were given this hammer as a quest reward.