Hey folks. I always get told that when stacking multipliers, like, say, damage multiplication from a Vital Strike that also crits, you don't multiply the values twice, you add the multipliers together.
I haven't been able to locate where this rule is described in the books anywhere. Does anyone know where it can be found? I'd like to read the real wording.
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You don't exactly add them. You reduce each additional multiplier by one and then add.
Multiplying: When you are asked to apply more than one multiplier to a roll, the multipliers are not multiplied by one another. Instead, you combine them into a single multiplier, with each extra multiple adding 1 less than its value to the first multiple. For example, if you are asked to apply a ×2 multiplier twice, the result would be ×3, not ×4.
The trick is to think of multipliers like extra damage. So a x2 multiplier is equal to +100%, a x3 is +200% ecc. Then you add up. so two times x2 is +100+100=+200%, x2 and x3 combine to +100+200=+300% ecc. ecc.
You don't exactly add them. You reduce each additional multiplier by one and then add.
Multiplying: When you are asked to apply more than one multiplier to a roll, the multipliers are not multiplied by one another. Instead, you combine them into a single multiplier, with each extra multiple adding 1 less than its value to the first multiple. For example, if you are asked to apply a ×2 multiplier twice, the result would be ×3, not ×4.
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damage multiplication from a Vital Strike that also crits, you don't multiply the values twice, you add the multipliers together.
What? I'm confused.
Vital Strike bonus damage are not multiplied on a critical hit, but are added to the total.
So a Greater Vital Strike Crit on a 1d8 weapon with +20 bonus damage on a X3 critical is
(1d8+20) * 3 + 3*1d8