Tunnelfighter

Type: General
Source: Underdark

You can fight more naturally in the cramped and close quarters of caves and tunnels than usual.
Prerequisite: Dex 13 or Tunnelrunner.
Benefit: You ignore the penalty for hampered melee when fighting in a narrow space (an area smaller than but at least one-half of your space) or a low space (an area shorter than but at least one-half of your height) with light or one-handed melee weapons. Furthermore, you take only a -4 circumstance penalty when using a two-handed weapon in such conditions. In a space both narrow and low, you function as if only one of those conditions applied (see Exploring the Underdark for rule on fighting and moving in cramped spaces). In addition, when fighting in cramped quarters, you do not lose your Dexterity bonus to Armor Class.
Normal: In a narrow or low space, a creature without this feat takes a -2 circumstance penalty on attack rolls with light weapons and a -4 circumstance penalty on attack rolls with one-handed weapons. It cannot use two-handed weapons at all. Such a creature also loses its Dexterity bonus to Armor Class. In a space that is both narrow and low, the penalties are doubled.

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