Stealth (Apath)

	Unofficial rules compendium
	Contents 1 Check 1.1 Stealth Check Modifiers; 1.2 Perception Check Modifiers; ; 2 Conditions For Going Into Stealth 2.1 Distraction; 2.2 Cover or Concealment; ; 3 Group Stealth; 4 Special Cases 4.1 Camouflage and Hide in Plain Sight; 4.2 Invisibility; 4.3 Senses; ; 5 Sniping; 6 Action; 7 External Links 7.1 Discussion Sources; ;
	Contents 1 Check 1.1 Stealth Check Modifiers; 1.2 Perception Check Modifiers; ; 2 Conditions For Going Into Stealth 2.1 Distraction; 2.2 Cover or Concealment; ; 3 Group Stealth; 4 Special Cases 4.1 Camouflage and Hide in Plain Sight; 4.2 Invisibility; 4.3 Senses; ; 5 Sniping; 6 Action; 7 External Links 7.1 Discussion Sources; ;

You are skilled at avoiding detection, allowing you to slip past foes or strike from an unseen position. This skill covers hiding and moving silently.

Check

Your Stealth check is opposed by the Perception check of anyone who might notice you. Creatures whose Perception you beat with your Stealth can't sense you or say where you are. You are effectively invisible against them. When hidden this way, you gain a +2 bonus on attack rolls, and ignores opponents' Dexterity bonuses to AC (even if they lack such a bonus, which is significant for sneak attack). Attackers don't know where you are, and must guess at a square to attack in.

As long as your enemies communicate, they are able to point out your location to each other if they know where they are; you are usually either hidden against all enemies or not hidden at all. Sometimes this can be to your advantage; an enemy who reports your location to its allies might make sounds which can reveal its own location.

Stealth Check Modifiers

Creature using Stealth is...	Stealth modifier
Size Modifier	See text
Moving at more than half speed, or gesturing (sign language, somatic components)	–5
Working (standard or full-round action) or Talking (verbal components)	–10
Running or in combat	–20

Creatures gain a bonus or penalty on Stealth checks based on their size: Fine +16, Diminutive +12, Tiny +8, Small +4, Large –4, Huge –8, Gargantuan –12, Colossal -16.

Once you are successfully hidden and are aware of all potential observers, you can take 10 on Stealth checks. Since unaware observers generally take 10 on their Perception checks and are often distracted as well, it is possible to remain in Stealth indefinitely unless something untoward happens, such as new creatures entering the scene.

Perception Check Modifiers

These Perception check modifiers typically apply to perceive someone using Stealth.

Circumstance	Perception modifier
Some distance away	-1 per 10 feet
Behind an obstacle (door)	-5
In improved cover	-10
No line of sight - invisible, total cover, or total concealment	-20
Observer is distracted (in melee)	-5

A successful Perception check means that creature pinpoints you.

The +20 modifier for lacking a line of sight above assumes a situation with a fair amount of distractions. In a very quiet setting or when another sense could reveal the character it is reduced to -10.

Conditions For Going Into Stealth

To hide using stealth, you need to satisfy two conditions, you need to be under cover or concealment, and all observers need to be distracted.

Distraction

An observer is distracted if one of the following applies:

The creature has a visible enemy (typically one of your allies) closer than you are.
The creatures is being distracted by a Bluff check.
You have total cover or total concealment against the creature.

Note that a distraction is only required to hide when you are currently being seen. If an opponent can't see you because you are currently hidden, you don't need a distraction.

Cover or Concealment

In order to hide, you need to have cover or concealment against all hostile observers.

Group Stealth

When a group tries to move stealthily the following procedure can be used. Do not use these rules in combat; it is intended for groups trying to avoid combat.

Each character makes a Stealth check. Use the best result. Each character beyond the character with the best roll penalizes the main character's Stealth check by -4. If a character's Stealth check was 10 or more the penalty for that character is reduced to -2. This is a variant of the Aid Other action.

Characters can hang back to lessen the impact they have on the main character's Stealth check. The Stealth check of a character who hangs back can never be used for the group's roll. For every 10 ft. behind the head of the group a character is, his Stealth check gets a +1 bonus, but his effective Perception check suffers a -1 penalty. Being behind a door or corner counts as being 50 ft. away. Common practice is to have two groups; a point group or point man moving at the head, and a secondary group moving far enough behind to gain an effective Stealth modifier of +9, sufficient to always roll 10.

Special Cases

Camouflage and Hide in Plain Sight

Rangers and some other characters gain improved stealth abilities. Camouflage means you always have concealment for the purpose of Stealth. You can use this virtual concealment with Stealth, but it confers no other advantages.

Hide in plain sight means you can always use Stealth, as if you had cover and all observers are distracted.

Invisibility

Invisibility denies all observers a line-of-sight and thus normally imposes a -20 penalty on Perception checks as above. An invisible creature that remains absolutely motionless

Senses

Most creatures rely on sight for penetrating stealth, but there are some special cases.

darkvision and low-light vision: Allow creatures to ignore concealment in conditions of poor light, but it is still possible to use contrasting shadows against such vision. Thus, it can actually become easier to hide against creatures with darkvision by introducing a light source, and thus shadows.

Alternate Primary Senses: There are some senses that penetrate most cover and concealment. See blindsense, blindsight, and tremorsense. Even in this case you can still hide if you manage to somehow conceal yourself against the sense in question, such as masking your scent against scent-based blindsight or not touch the ground against tremorsense. Camouflage is a great asset here.

Secondary Senses: Even if you are invisible to a primary sense, or an observers primary sense is blinded, most creatures have a secondary sense (usually hearing, but sometimes scent) they can use that to locate you. You are considered invisible if the target can only detect you with a secondary sense. See keen scent, scent.

A character that has one or more secondary senses put out of action suffer a -4 penalty on Perception checks, cf deafened condition.

Sniping

If you've already successfully used Stealth at least 10 feet from your target, you can make one ranged attack and then immediately use Stealth again without becoming visible in between. You take a –20 penalty on your Stealth check to maintain your obscured location. If you pass this check, you were never visible, and targets have no idea where you are.

Note that you can take a 5 ft. step before you make an attack to hide at the beginning of the round, this avoids all circumstance penalties due to your actions in the previous round.

Action

Usually none. Normally, you make a Stealth check as part of movement, so it doesn't take a separate action. You can use stealth as part of a 5 ft. step.

External Links

Original Stealth rules at d20PFSRD.com
Stealth Discussion at ENworld
Stealth development article at Paizo Blog

Discussion Sources

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