Unarmed Attacks
Most D&D characters have a vast array of weaponry available to them. Lethal implements such as swords, maces, and spears are seldom out of reach, and many characters also wield deadly spells. Still, a simple kick, head butt, or punch has its place in the game, too, especially when dealing with the unexpected.
The rules for attacking without weapons contain a few odd twists that can throw off players and DMs who don't use them often, and characters who make unarmed attacks into an art, such as monks, can pose some special problems as well. This series explores unarmed attacks in detail, and seeks to throw some light into the territory's murkier corners.
The Language of Unarmed Attacks
Here are a few terms you'll encounter in this article.
Free Hand: For a humanoid or other bipedal character, a hand that's not occupied with holding or wielding a weapon or other object, or being used for some other purpose, such as clinging to a wall.
Iterative Attack: One or more extra attacks a character gains by virtue of a high base attack bonus when using the full attack action; see pages 22 and 143 in the Player's Handbook.
Lethal Damage: Damage that reduces a creature's hit points.
Natural Weapon: An appendage or other body part (such as teeth or claws) that a creature can use to attack other creatures or objects. Natural weaponry deals lethal damage without recourse to a class feature or feat, such as Improved Unarmed Strike.
Nonlethal Damage: Damage that accumulates without reducing a creature's hit points. When a creature accumulates enough nonlethal damage to equal its current hit points, it is staggered. When a creature accumulates enough nonlethal damage to exceed its current hit points, it is unconscious. Some creatures ignore nonlethal damage.
Threatened Area: The area around a creature where it can make armed melee attacks. For most creatures, this is the band of squares adjacent to the creature.
Generally, a creature must wield a weapon or have a natural weapon to threaten an area.
Unarmed Attack/Unarmed Strike: These two terms are used interchangeably to describe an attack with an appendage that is not a natural weapon, such as a human's fist. An unarmed attack usually deals nonlethal damage and provokes an attack of opportunity from the creature being attacked.