I was playing with a friend of mine and it felt quite unfair to have only 3 charges which in many scenarios led to very one-sided gameplay, which almost never was the case with 4 charges.
With 4 charges you end up getting much more riveting, "on edge" gameplay with just one opponent, without making the rounds too long.
#1v1 scenarios should always give players 4 hit points, instead of just a chance of giving 4
mortal python