Six-shot Revolver

At the beginning of your upkeep, remove all counters from Six-shot Revolver and place 6 bullet counters on it.
Whenever Six-shot Revolver is touched, remove a bullet counter from it. If you do, it deals 1 damage to target creature or player.

"'Did he fire six shots or only five?' Well, to tell you the truth, in all this excitement I kind of lost track myself."