Lightning Hose is an attack performed by Rogue merc when she has +3 skills in all her equipements
It's lightning bolt type thing...doing major lightning damage, and pierces too~

Hmm...calculating the Lightning hose dmg~
Base lightning dmg: 1 - 40 base dmg
From level 1 -9:
+8 max lightning dmg per level

From level 10-15:
+12 max dmg per level

From 16-98:
+20 max lightning per level

And it will hit the monsters/opponents multiple times~