i wouldnt say anything you said is all that accurate. liberty isnt better than quis, as the creature can still be shot, burned, drained, eaten etc, but not poisoned, anti-mattered, or frozen, etc. and the ball lightening generator, as you call it, only makes a ball lightning after a successful attack, a lobo/shield (or killing it, obv) would stop it dead in its tracks. the cost of the card is spelled out in the notes, incorporating the sparks/ball lightnings as 1|2 cost respectively.