Piston-Driven Polearm

a sword able to get by doing the quest, mithril man batteries. 
Damage 
lvl. 1: 4-37 
lvl. 2: 5-53
lvl. 3: 6-64 
lvl. 4: 7-74 
lvl. 5: 8-83 
lvl. 6: 8-91 
lvl. 7: 9-98 
lvl. 8: 10-105