[top]Bluff (Cha)

A Bluff check is opposed by the target?s Sense Motive check. See the accompanying table for examples of different kinds of bluffs and the modifier to the target?s Sense Motive check for each one.
Favorable and unfavorable circumstances weigh heavily on the outcome of a bluff. Two circumstances can weigh against you: The bluff is hard to believe, or the action that the target is asked to take goes against its self-interest, nature, personality, orders, or the like. If it?s important, you can distinguish between a bluff that fails because the target doesn?t believe it and one that fails because it just asks too much of the target. For instance, if the target gets a +10 bonus on its Sense Motive check because the bluff demands something risky, and the Sense Motive check succeeds by 10 or less, then the target didn?t so much see through the bluff as prove reluctant to go along with it. A target that succeeds by 11 or more has seen through the bluff.
A successful Bluff check indicates that the target reacts as you wish, at least for a short time (usually 1 round or less) or believes something that you want it to believe. Bluff, however, is not a suggestion spell.
A bluff requires interaction between you and the target. Creatures unaware of you cannot be bluffed.
[top]Feinting in Combat
You can also use Bluff to mislead an opponent in melee combat (so that it can?t dodge your next attack effectively). To feint, make a Bluff check opposed by your target?s Sense Motive check, but in this case, the target may add its base attack bonus to the roll along with any other applicable modifiers.
If your Bluff check result exceeds this special Sense Motive check result, your target is denied its Dexterity bonus to AC (if any) for the next melee attack you make against it. This attack must be made on or before your next turn.
Feinting in this way against a nonhumanoid is difficult because it?s harder to read a strange creature?s body language; you take a ?4 penalty on your Bluff check. Against a creature of animal Intelligence (1 or 2) it?s even harder; you take a ?8 penalty. Against a nonintelligent creature, it?s impossible.
Feinting in combat does not provoke an attack of opportunity.
[top]Creating a Diversion to Hide
You can use the Bluff skill to help you hide. A successful Bluff check gives you the momentary diversion you need to attempt a Hide check while people are aware of you. This usage does not provoke an attack of opportunity.
[top]Delivering a Secret Message
You can use Bluff to get a message across to another character without others understanding it. The DC is 15 for simple messages, or 20 for complex messages, especially those that rely on getting across new information. Failure by 4 or less means you can?t get the message across. Failure by 5 or more means that some false information has been implied or inferred. Anyone listening to the exchange can make a Sense Motive check opposed by the Bluff check you made to transmit in order to intercept your message (see Sense Motive).
[top]Epic Check
You can implant a nonmagical suggestion in a target, display a false alignment, or disguise your surface thoughts.
Example CircumstanceSense Motive Modifier
Instill suggestion in target+50
Display false alignment70
Disguise surface thoughts100
[top]Instill Suggestion in Target
This is identical to the effect of the suggestion spell, except that it is nonmagical and lasts for only 10 minutes. It can be sensed as if it were an enchantment effect (Sense Motive DC 25).
[top]Display False Alignment
You can fool alignment-sensing effects by displaying a false alignment of your choice. Once set, a false alignment remains as long as you remain conscious and awake.
[top]Disguise Surface Thoughts
You can fool spells such as detect thoughts (or similar effects) by displaying false surface thoughts. While you can?t completely mask the presence of your thoughts, you can change your apparent Intelligence score (and thus your apparent mental strength) by as much as 10 points and can place any thought in your ?surface thoughts? to be read by such spells or effects. If a character attempts to use Sense Motive to detect your surface thoughts (see the Sense Motive skill description), this becomes an opposed check (though any result lower than 100 automatically fails).
Varies. A Bluff check made as part of general interaction always takes at least 1 round (and is at least a full-round action), but it can take much longer if you try something elaborate. A Bluff check made to feint in combat or create a diversion to hide is a standard action. A Bluff check made to deliver a secret message doesn?t take an action; it is part of normal communication. A Bluff check to display a false alignment is a full-round action.
[top]Try Again
Varies. Generally, a failed Bluff check in social interaction makes the target too suspicious for you to try again in the same circumstances, but you may retry freely on Bluff checks made to feint in combat. Retries are also allowed when you are trying to send a message, but you may attempt such a retry only once per round.
Each retry carries the same chance of miscommunication.
A ranger gains a bonus on Bluff checks when using this skill against a favored enemy.
The master of a snake familiar gains a +3 bonus on Bluff checks.
If you have the Persuasive feat, you get a +2 bonus on Bluff checks.
If you have 5 or more ranks in Bluff, you get a +2 bonus on Diplomacy, Intimidate, and Sleight of Hand checks, as well as on Disguise checks made when you know you?re being observed and you try to act in character.

[top]Bluff Examples
Example CircumstancesSense Motive Modifier
The target wants to believe you.?5
The bluff is believable and doesn?t affect the target much.+0
The bluff is a little hard to believe or puts the target at some risk.+5
The bluff is hard to believe or puts the target at significant risk.+10
The bluff is way out there, almost too incredible to consider.+20

System Reference Document -> Skill Descriptions
This article is a D20 reference page
The System Reference Document is a comprehensive toolbox consisting of rules, races, classes, feats, skills, various systems, spells, magic items, and monsters compatible with the d20 System version of Dungeons & Dragons and various other roleplaying games from Wizards of the Coast.

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