3E. The first time he hits someone over the head, he uses his Power Critical feat (Masters of the Wild) to declare the hit an automatic critical threat. The second time he hits someone over the head, he can't use his Power Critical feat, because it only works 1/day and he's run out of superpowers.
3E/3.5. The first time he hits someone over the head, the paladin uses Smite Evil to deal extra damage. The second time he hits someone over the head, he can't use Smite Evil, because it only works 1/day and he's run out of superpowers.
3.5. The first time he hits someone over the head, the samurai uses Kiai Smite to deal extra damage. The second time he hits someone over the head, he can't use Kiai Smite, because it only works 1/day and he's run out of superpowers.
3.5. The first time he hits someone over the head, the ravager uses Pain Touch to deal extra damage. The second time he hits someone over the head, he can't use Pain Touch, because it only works 1/day and he's run out of superpowers.
... is that the sort of thing?
-Hyp.