Yes, since Power Attack damage is strength damage and strength damage is multiplied. Remember to take the penalty when you are rolling to confirm the critical hit though (I think). At least that's how I run it in my campaigns.
My question is semmingly simple, but I can't find an anwser. If my charater uses Power Attack on a critical hit, is the Power Attack damage also multipied? I know that some damage, such as sneak attack, isn't multipied. I can't find a straight anwser about what IS multiplied. Any help would be awesome.
The rule is found on page 134 of your PHB: "Sometimes you multiply damage by some factor, such as on a critical hit. Roll the damage (with all modifiers) multiple times and total the results."
Modifiers (such as the +1, +5, +10, or whatever bonus to damage you get from Power Attack) are always multiplied. Extra dice of damage are never multiplied: "Extra damage dice over and above a weapon's normal damage, such as that dealt by a sneak attack or the special ability of a flaming sword, are never multiplied."
And yes, Phil L., the attack roll penalty from Power Attack applies to the critical confirmation roll as well.
Great, but would that apply to Power Attack damage already multiplied?
I can't remember offhand what the effects of Leaping Charge are, but the general rule of thumb with multiplication in D&D is that 2 doublings is a tripling, a tripling and a doubling is 4x, and so on.
Great, but would that apply to Power Attack damage already multiplied? This monk also has leaping charge.
I.E. his ATK is +11 or +13 with a jumping charge, assuming the skill check works. I subract a paltry 2 from the attack to add for damage, and end up with a +11 for the attack and 2d6+8(2d6 for the monk's belt, +4 for STR, +2 for Power Attack, x2 multiplier from Leaping Charge applied to the Power Attack). If a crit. IS rolled and confirmed, the damage would be 4d6+16?
I think your going to have to explain your example a little more clearly for me to be able to follow it.
A critical hit means that you roll your damage more than once, with all your usual bonuses, and add the rolls together. Extra damage over and above a weapon’s normal damage is not multiplied when you score a critical hit.
would seem to be the phrase we are debating. Most specifically what is meant by 'extra damage'.
By this wording one could argue that any benefits obtained from the leaping charge would not apply since its not a routine part of 'your weapon'. Leaping Charge is essentially a benefit derived from the circumstances. In the same vein I'd argue that if you set a long spear against a charging foe (which normally deals double damage) and managed to critical it would double damage for the original hit but would add only another die + modifiers to the damage on top of that - essentially resulting in *3 damage as opposed to *4 damage.
Great, but would that apply to Power Attack damage already multiplied? This monk also has leaping charge.
You mean Leap Attack from Complete Adventurer, right?
Check the errata and you will see that they have changed the wording from "double the extra damage" to "+100% the normal bonus damage" for just this reason.
Short answer: yes, the damage would be 4d6+16.
Planning on using this sometime soon?
Wouldn't it be a good Idea to see how your DM would play it? I hear he is a decent guy and with the right amount of bribing could go for the most beneficial to you... or the monster with the same abilities.