D&D (2024) Vex Nick Math and Info

FrogReaver

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Vex/Nick Math and info

For Vex the next attack hit chances are derived via the formula:
(Chance to Hit) = (Base to hit) + (Chance for Advantage)(Base to Hit) - (Chance for Advantage)*(Base to Hit)^2

Where (Chance for Advantage) = (Chance previous attack hit)


Working out the algebraic expression for each subsequent attacks can be done but is alot of messy algebra and not really needed, since we can recursively use the hit chance produced for the last attack as the 'Chance for Advantage' for the next attack.

Chance to Crit
Chance to Crit = (Base Crit Chance)(1-Chance for advantage) + (1-(1-Base Crit Chance))(Chance for Advantage)

Where (Chance for Advantage) = (Chance previous attack hit)

Comments
  • I've added Chance to Crit formula and charts
  • If the copy paste from excel shows up messy I will do a screen snip to display.
  • Between Nick and the bonus action from the dual wielder feat it may not be possible to place the non-vex attack as your 4th attack. If so the sequence of 1st - 4th attacks will simply start and end in the middle of turns. If I find a better way to display this I will.
  • Note there was an error in the previous formula I posted: (Chance to Hit) = (Base to hit) + (Base to Hit)^2 - (Base to Hit)^3. This allowed some single attack values to go over the advantage attack values.
  • In light of the error I've also revised the charts and examples below.
  • Hopefully someone can confirm my math.
Chance to Hit
Base to hit1st attack2nd attack3rd attacknon-vex attack
5.00%5.00%5.24%5.25%5.25%
10.00%10.00%10.90%10.98%10.99%
15.00%15.00%16.91%17.16%17.19%
20.00%20.00%23.20%23.71%23.79%
25.00%25.00%29.69%30.57%30.73%
30.00%30.00%36.30%37.62%37.90%
35.00%35.00%42.96%44.77%45.19%
40.00%40.00%49.60%51.90%52.46%
45.00%45.00%56.14%58.89%59.58%
50.00%50.00%62.50%65.63%66.41%
55.00%55.00%68.61%71.98%72.82%
60.00%60.00%74.40%77.86%78.69%
65.00%65.00%79.79%83.15%83.92%
70.00%70.00%84.70%87.79%88.44%
75.00%75.00%89.06%91.70%92.19%
80.00%80.00%92.80%94.85%95.18%
85.00%85.00%95.84%97.22%97.40%
90.00%90.00%98.10%98.83%98.89%
95.00%95.00%99.51%99.73%99.74%
Average Accuracy through X Attacks
Base to hit1st attack2nd attack3rd attack4th attack
5.00%5.00%5.12%5.16%5.18%
10.00%10.00%10.45%10.63%10.72%
15.00%15.00%15.96%16.36%16.56%
20.00%20.00%21.60%22.30%22.68%
25.00%25.00%27.34%28.42%29.00%
30.00%30.00%33.15%34.64%35.46%
35.00%35.00%38.98%40.91%41.98%
40.00%40.00%44.80%47.17%48.49%
45.00%45.00%50.57%53.34%54.90%
50.00%50.00%56.25%59.38%61.13%
55.00%55.00%61.81%65.20%67.10%
60.00%60.00%67.20%70.75%72.74%
65.00%65.00%72.39%75.98%77.96%
70.00%70.00%77.35%80.83%82.73%
75.00%75.00%82.03%85.25%86.99%
80.00%80.00%86.40%89.22%90.71%
85.00%85.00%90.42%92.69%93.86%
90.00%90.00%94.05%95.64%96.46%
95.00%95.00%97.26%98.08%98.49%

Chance to Crit
Base to hit1st attack2nd attack3rd attacknon-vex attack
5.00%5.00%5.24%5.25%5.25%
10.00%5.00%5.48%5.52%5.52%
15.00%5.00%5.71%5.80%5.81%
20.00%5.00%5.95%6.10%6.13%
25.00%5.00%6.19%6.41%6.45%
30.00%5.00%6.43%6.72%6.79%
35.00%5.00%6.66%7.04%7.13%
40.00%5.00%6.90%7.36%7.47%
45.00%5.00%7.14%7.67%7.80%
50.00%5.00%7.38%7.97%8.12%
55.00%5.00%7.61%8.26%8.42%
60.00%5.00%7.85%8.53%8.70%
65.00%5.00%8.09%8.79%8.95%
70.00%5.00%8.33%9.02%9.17%
75.00%5.00%8.56%9.23%9.36%
80.00%5.00%8.80%9.41%9.51%
85.00%5.00%9.04%9.55%9.62%
90.00%5.00%9.28%9.66%9.69%
95.00%5.00%9.51%9.73%9.74%

Total Crits through X attacks
Base to hit1st attack2nd attack3rd attacknon-vex attack
5.00%5.00%10.24%15.49%20.74%
10.00%5.00%10.48%15.99%21.51%
15.00%5.00%10.71%16.52%22.33%
20.00%5.00%10.95%17.05%23.18%
25.00%5.00%11.19%17.60%24.05%
30.00%5.00%11.43%18.15%24.94%
35.00%5.00%11.66%18.70%25.83%
40.00%5.00%11.90%19.26%26.72%
45.00%5.00%12.14%19.80%27.60%
50.00%5.00%12.38%20.34%28.46%
55.00%5.00%12.61%20.87%29.29%
60.00%5.00%12.85%21.38%30.08%
65.00%5.00%13.09%21.88%30.83%
70.00%5.00%13.33%22.35%31.52%
75.00%5.00%13.56%22.79%32.15%
80.00%5.00%13.80%23.21%32.71%
85.00%5.00%14.04%23.59%33.21%
90.00%5.00%14.28%23.93%33.63%
95.00%5.00%14.51%24.24%33.98%
 
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For those that don't have immediate access here are some relevant rules.

Light
Weapon Property
When you take the Attack action on your turn and attack with a Light weapon, you can make one extra attack as a Bonus Action later on the same turn. That extra attack must be made with a different Light weapon and you don't add your ability modifier to the extra attack's damage unless that modifier is negative.

Nick
Weapon Mastery
When you make the extra attack of the Light property, you can make it as part of the Attack action instead of as a Bonus Action. You can make this extra attack only once per turn.

Vex
Weapon Mastery
If you hit a creature with this weapon and deal damage to the creature, you have Advantage on your next attack roll against that creature before the end of your next turn.

Two-Weapon Fighting
Fighting Style Feat (Prerequisite: Fighting Style Feature)
When you make an extra attack as a result of using a weapon that has the Light property, you can add your ability modifier to the damage of that attack if you aren't already adding it to the damage.

Dual Wielder
General Feat (Prerequisite: Level 4+, Strength or Dexterity 13+)
Ability Score Increase. Increase your Strength or Dexterity score by 1, to a maximum of 20.
Enhanced Dual Wielding. When you take the Attack action on your turn and attack with a weapon that has the Light property, you can make one extra attack as a Bonus Action later on the same turn with a different weapon, which must be a Melee weapon that lacks the Two-Handed property. You don't add your ability modifier to the extra attack's damage unless that modifier is negative.
Quick Draw. You can draw or stow two weapons that lack the Two-Handed property when you would normally be able to draw or stow only one.
 
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