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Message: <blockquote data-quote="Will" data-source="post: 290426" data-attributes="member: 5566">TWF mathSomeone emailed me having discovered my math was howlingly wrong. So, correction:Assuming TWF & Ambidexterity, or Rapid Shot, and two attacks (+6/+1 - +9/+4) it's worth using the feats so long as AC is no more than primary bonus + 14. Primary bonus is the first attack bonus, so a character with 18 Str and BAB of +6/+1 would have a primary bonus of +10.P = Primary attack bonusThe odds of a hit are: (20 - AC + P)/20  So AC 10, P of +6, odds are .8The average damage of an attack is: (20 - AC + P)/20 x avg dmg roll2 attacks, compared to 3 attacks with TWF/Ambidexterity or Rapid ShotInterested in when the 2 attacks are better than the 3 attacks:(avg dmg roll)(20 - AC + P)/20 + (avg dmg roll)(20 - AC + P - 5)/20 > 2(avg dmg roll)(20 - AC + P - 2)/20 + (avg dmg roll)(20 - AC + P - 7)/20Since avg dmg roll is everywhere, as is 1/20, we can eliminate the factors.(20 - AC + P) + (20 - AC + P - 5) > 2(20 - AC + P - 2) + (20 - AC + P - 7)35 - 2AC + 2P > 49 - 3AC + 3PAC - P > 14AC > P + 14IE: 2 attacks are better than 3 when AC is more than 14 above primary attack bonus. This is, granted, not going to happen a heck of a lot... but will happen sometimes.This is more important for rogues and others with lower BAB.For the curious, the same derivation can be worked out for single vs. double attacks.20 - AC + P > 40 - 2AC + 2P - 4AC > P + 16And so on.If my math is wrong, please let me know. <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=";)" title="Wink    ;)"  data-smilie="2"data-shortname=";)" /></blockquote>

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