Candle of RevealingConsumable 7
Source Pathfinder Advanced Player's Guide
Price 60 gp
Weight negligible
Activate 
Interact
When lit, this black candle's eerie blue flame reveals the presence of invisible creatures. Within a 10-foot radius of the lit candle, creatures don't benefit from the invisible condition. Their bodies are outlined, not fully visible, so they are concealed. Once lit, the candle burns for 1 minute, after which the effect ends. If extinguished, it can't be relit.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
ConsumableAn item with this trait can be used only once. Unless stated otherwise, it's destroyed after activation. Consumable items include alchemical items and magical consumables such as scrolls and talismans. When a character creates consumable items, they can make them in batches of four.
DivinationThe divination school of magic typically involves obtaining or transferring information, or predicting events.
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.