Arc Cane

This magical artifact takes the shape of an unassuming dark wood cane with a simple blue gem set into the handle. When attuned, the metal cap on the end will become infused with lightning energy. The weapon has 3 charges that refill at dawn each day. Successful melee attacks will either deal base melee damage, or can be a special attack that uses one charge.

Special attack options are:

Deal 3d6 lightning damage instantly.

OR

Subtract 5 from the attack roll, and force a CON save with DC 19. On a failed save, the victim will fall unconscious for 1 minute or until damaged. If the -5 causes the attack to miss, no effect is applied.