Halfling Luck

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Halfling Luck.webp

Halfling Luck is a passive feature in Baldur's Gate 3 that grants all halflings to reroll a dice when it lands on a 1 for an Attack Roll, Ability Check, or Saving Throw.

Description

When you roll a 1 for an Attack roll, Ability check, or Saving throw, you can reroll the dice and must use the new roll.

How to learn

Races:

(Character level is the sum of all class levels for a multi-classed character.)

Notes

  • It is possible for the new roll to be another 1.
  • As of patch 6, when rolling with advantage, the following rules apply:
    • If one dice rolls a 1, it's re-rolled, and the higher of the two dice used.
    • If both dice roll a 1, they are both re-rolled, and the higher one used.
  • The chance to hit displayed when hovering an attack on an enemy doesn't take into account Halfling Luck.
  • Halfling Luck is particularly useful to avoid failures for ability checks and saving throws when the roll would only fail on a critical miss.
    • On a normal roll that succeeds on a 2 or more, Halfling Luck would reduce the chance to fail from 1/20 to 1/400.
    • On a roll with advantage that succeeds on a 2 or more, Halfling Luck would reduce the chance to fail from 1/400 to 1/160000, making it practically impossible to fail. With Karmic Dice active, it may be simply impossible to roll 4 critical failures in a row.
    • Traders can get all their easy to steal item stolen without fear of missing a single roll.
      • Be mindful that it can make your character Heavily Encumbered Heavily Encumbered which gives disadvantage on all ability checks, including further pickpocket attempts.
    • Stealth checks can get pretty much guaranteed to succeed.
    • Also useful to avoid Concentration getting interrupted too often by constitution save critical misses when taking low damage.

Math[edit | edit source]

Chances of succeeding a specific roll[edit | edit source]

See Advantage math section for comparison.

Chance of rolling a target number or above on 1d20 with Halfling Luck
Target on 1d20 Luck Normal Roll Luck with Advantage Luck with Disadvantage
1 100% 100% 100%
2 99.75% 99.9994% 99.5%
3 94.50% 99.7% 89.3%
4 89.25% 98.84% 79.66%
5 84% 97.44% 70.56%
6 78.75% 95.48% 62.02%
7 73.5% 92.98% 54.02%
8 68.25% 89.92% 46.58%
9 63% 86.31% 39.69%
10 57.75% 82.15% 33.35%
11 52.5% 77.44% 27.56%
12 47.25% 72.17% 22.33%
13 42% 66.36% 17.64%
14 36.75% 59.99% 13.51%
15 31.5% 53.08% 9.92%
16 26.25% 45.61% 6.89%
17 21% 37.59% 4.41%
18 15.75% 29.02% 2.48%
19 10.5% 19.9% 1.1%
20 5.25% 10.22% 0.28%

Chance to hit comparisons[edit | edit source]

On a normal roll, Halfling Luck multiplies the chance to hit by :

  • 1.05 whatever the target roll is
    • This would be the most noticeable for a target roll of 2 which would add a flat 4.75% chance to hit or almost +1 on a d20.
    • For a target roll of 20 it would add a flat 0.25% chance to hit, which would be a critical success.

On a roll with Advantage, Halfling Luck multiplies the chance to hit by :

  • 1.003 for a target roll of 2 or a flat +0.25% chance to hit
  • 1.01 for a target roll of 3 or a flat +0.70% chance to hit

...

  • 1.03 for a target roll of 11 or a flat +2.44% chance to hit

...

  • 1.05 for a target roll of 20 or a flat +0.47% chance to hit, which would be a critical success.

On a roll with Disadvantage, Halfling Luck multiplies the chance to hit by :

  • 1.10 whatever the target roll is
    • This would be the most noticeable for a target roll of 2 which would add a flat 9.25% chance to hit or almost +2 on a d20.
    • For a target roll of 20 it would add a flat 0.03% chance to hit, which would be a critical success.

Chance to fail comparisons[edit | edit source]

On a normal roll, Halfling Luck divides the chance to fail by :

  • 20 for a target roll of 2
  • 1.82 for a target roll of 3
  • 1.40 for a target roll of 4

...

  • 1.003 for a target roll of 20

On a roll with Advantage, Halfling Luck divides the chance to fail by :

  • 400 for a target roll of 2
  • 3.31 for a target roll of 3
  • 1.95 for a target roll of 4

...

  • 1.01 for a target roll of 20

On a roll with Disadvantage, Halfling Luck divides the chance to fail by :

  • 19.52 for a target roll of 2
  • 1.78 for a target roll of 3
  • 1.36 for a target roll of 4

...

  • 1.0003 for a target roll of 20

External Links[edit | edit source]