- Type of feat: General
- Prerequisite: None
- Required for: None
- Specifics: This feat grants the character the ability to fight well if blinded or against invisible creatures. The character gets to re-roll its miss chance percentile one time to see if it actually hits.
A fighter may select blind fight as one of his fighter bonus feats. Clerics with the Darkness domain receive this feat for free at first level. Red Dragon Disciple receives this feat for free at 5 class levels. Yuan-ti receive blind fight for free at creation.
- Use: Automatic
Blind Fight does not change a target's concealment but instead gives a second roll if you miss due to concealment. The probability of missing a target with 50% concealment changes from 50% to 25%, due to having to fail both rolls (0.5*0.5=0.25). Similarly, if a target has 10% concealment (e.g. from Ghostly Visage), to miss said target one would have to fail both rolls, which has a a probability of 0.1*0.1=0.01, or 1%.
Essentially, the probability of a character with blind fight missing a target due to concealment is the square of the probability that a character without blind fight would miss a target due to concealment. This calculation is valid for a single attack - it gets more complicated for multiple attacks (see Talk:Concealment).
In the unmodified game, it's the only ability that has a permanent effect against all kinds of concealment. Unlike PnP, spells like True Strike, True Seeing and Blind Sight have no effect whatsoever. Some abilities ignore it or remove it, but these have limitations (see Concealment)
Further, as the description suggests, Blind Fight negates the +2 to AB invisible (as under the effect of an Invisibility spell) creatures get. It also makes sure invisible creatures cannot deny your Dodge/Dex AC. This is only the case with melee weapons in melee combat. Invisible attackers still get their bonuses with any ranged weapon, no matter the distance from which they attack.
There is NO effect on ethereal jaunt and stealth however, which will still deny your Dodge/Dex AC (although these abilities never offer a +2 to AB).
Contrary to the description, Blind Fight does not remove the 50% miss chance blinded characters get.