Ember DustConsumable 2
Source Pathfinder #175: Broken Tusk Moon
Price 6 gp
Weight negligible
Activate 
Interact
This handful of gritty black dust glows faintly, like old coals, but is cool to the touch. When ember dust is sprinkled upon the ground or a flat surface in an adjacent unoccupied square, the dust transforms into a bonfire that fills the majority of the square. For 8 hours, the bonfire blazes regardless of whether it has any fuel.
The fire doesn't harm the surface on which it was sprinkled, and it can't be extinguished except by fully dousing or submerging it in water, or by smothering it completely. Anything that's lit from the bonfire requires fuel to burn and can be quenched normally.
While it's safe enough to move through the space and edge around the bonfire, a creature remaining in the bonfire for at least a full round takes 1d6 fire damage each round.
After 8 hours, the bonfire becomes a normal fire and continues burning only as conditions permit.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
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.
EvocationEffects and magic items with this trait are associated with the evocation school of magic, typically involving energy and elemental forces.
FireEffects with the fire trait deal fire damage or either conjure or manipulate fire. Those that manipulate fire have no effect in an area without fire. Creatures with this trait consist primarily of fire or have a magical connection to that element.
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.