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Message: <blockquote data-quote="Torchlyte" data-source="post: 4208146" data-attributes="member: 64272">This.Calculating with respect to hits is statistically flawed because what you need to hit varies.Everything outside of the crit instance is sunk.We roll a 1: the feat does nothing.We roll a 15: the feat does nothing.We roll a 20: the feat does something.1/20 is our starting modifier to represent the probability of the feat activating, equating to .05 as a decimal.The feat adds 1d10 damage, averaging 5.5 damage when a crit has occurred.Multiply 5.5 * .05, and you get .275 damage. We took into account the applicable probability when we used the 1/20 fraction, so this .275 damage is per swing.If we have a crit range of '19-20', we would double the 1/20 to make it 1/10. This leads to a result of .55 damage per swing, if and only if we invested whatever it took to bring our crit range to '19-20' in the first place.Summary:If we crit on 20s, we get +.275 damage per swing.If we crit on 19s, we get +.55 damage per swing.*****Now, compare that to to a feat that gives us +2 damage per hit. Unfortunately, this example requires the AC vs Attack assumption we avoided in the previous statements.If we hit on a 6 or more: we will get +1.5 damage per swingIf we hit on an 11 or more: we will get +1 damage per swingIf we hit on a 16 or more: we will get +.5 damage per swingThus, we see that it takes a very high-AC enemy to make the +1d10 feat better, even if we already have a 19-20 crit range.*****For a final comparison, let's say we're increasing 2d6 damage to 2d8 damage through the use of the Backstabber feat. Assume we crit on 19-20.If we hit on a 6 or more: ((13/20)*2) + ((2/20)*4) = 1.3 + .4 = +1.7 damage per swingIf we hit on an 11 or more: ((8/20)*2) + ((2/20)*4) = .8 + .4 = +1.2 damage per swingIf we hit on a 16 or more:  ((3/20)*2) + ((2/20)*4) = .3 + .4 = +.7 damage per swingThat's only a .2 improvement over the +2 damage feat and it requires the rogue to maintain combat advantage.For reference, the stat list for critting on 20s is as follows: +1.6/+1.1/+.6zZz.</blockquote>

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