D20:Balance Skill

You can walk on a precarious surface. A successful check lets you move at half your speed along the surface for 1 round. A failure by 4 or less means you can?t move for 1 round. A failure by 5 or more means you fall. The difficulty varies with the surface, as follows:

Narrow Surface	Balance DC1	Difficult Surface	Balance DC1
7?12 inches wide	10	Uneven flagstone	102
2?6 inches wide	15	Hewn stone floor	102
Less than 2 inches wide	20	Sloped or angled floor	102
Add modifiers from Narrow Surface Modifiers, below, as appropriate. Only if running or charging. Failure by 4 or less means the character can?t run or charge, but may otherwise act normally.

Epic Surface	DC
1?2 inches wide	20
Up to 1 inch wide	40
Hair-thin	60
Liquid1	90
Cloud	120
Includes any other surface that couldn?t support the character?s weight, such as a fragile branch.

[top]Narrow Surface Modifiers

Surface	DC Modifier1
Lightly obstructed	+2
Severely obstructed	+5
Lightly slippery	+2
Severely slippery	+5
Sloped or angled	+2
Add the appropriate modifier to the Balance DC of a narrow surface. These modifiers stack.

You are considered flat-footed while balancing, since you can?t move to avoid a blow, and thus you lose your Dexterity bonus to AC (if any). If you have 5 or more ranks in Balance, you aren?t considered flat-footed while balancing. If you take damage while balancing, you must make another Balance check against the same DC to remain standing.

You can try to walk across a precarious surface more quickly than normal. If you accept a ?5 penalty, you can move your full speed as a move action. (Moving twice your speed in a round requires two Balance checks, one for each move action used.) You may also accept this penalty in order to charge across a precarious surface; charging requires one Balance check for each multiple of your speed (or fraction thereof ) that you charge.

None. A Balance check doesn?t require an action; it is made as part of another action or as a reaction to a situation.

If you have the Agile feat, you get a +2 bonus on Balance checks.

If you have 5 or more ranks in Tumble, you get a +2 bonus on Balance checks.

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System Reference Document -> Skill Descriptions