Cloudsense

• Range: varies (typically 30 to 300 feet)
• Requires Line of Sight? Special
• Requires Line of Effect? Yes
• Usable for Combat Targeting? Yes
• Bonus/Penalty vs. Stealth? Perception check
• Ignores Invisibility? Yes

Description: Cloudsense is a rare and unusual sense that allows its possessor to ignore partial or total concealment caused by non-solid effects, such as fogs, clouds, or other gases. A creature with cloudsense cannot use the sense to perceive through solid objects, nor around corners. In this regard, it requires both line of sight and line of effect, but only with regards to intervening objects or elements.

Any non-stealthed creature that has concealment from a non-solid source and is within range of the sense is detected. The creature with cloudsense must make a perception check to detect stealthed creatures within range. The DC of the perception check is equal to the stealthing creature's stealth check result. Because it is a non-visual sense, cloudsense is not affected by invisibility (though it is fooled by greater invisibility). Detected creatures do not have concealment.

Spells such as Fog Cloud (Sorcerer/Wizard Spell), which interrupt line of sight but not line of effect, are penetrated completely by cloudsense. Pillar of Fire (Sorcerer/Wizard Spell) and Wind Wall (Sorcerer/Wizard Spell) are also penetrated by cloudsense, since they are non-solid. However, Pillar of Stone (Sorcerer/Wizard Spell) or any other solid element, as well as permeable, but solid, objects, like Pillar of Thorns (Druid Spell) block cloudsense.

Cloudsense does not allow the detecting creature to distinguish between friend or foe, nor does it provide enough detail to allow the detecting creature to attempt a lore check against an unfamiliar creature, or recognize previously encountered individuals.