Clockwork Spider BombConsumable 8
Source Pathfinder Lost Omens: The Grand Bazaar
Price 100 gp
Weight 1 bulk
Activate 
Interact
While arachnophobes don't need to fear this contraption's spiderlike appearance, they should probably worry if it starts ticking. When you activate the spider bomb, you place it on the ground and the clockwork spider crawls 5 feet in a straight line, continuing to advance 5 feet in the same straight line at the end of each of your turns for the next 4 rounds (traveling a total of 25 feet). If it takes any damage during this time, its bulbous abdomen detonates in a raging flame, dealing 5d6 fire damage to all creatures in a 5-foot burst (DC 24 basic reflex). You can also activate it a second time with a single-action command word activation, causing it to explode. The spider bomb has an AC of 10, 5 Hit Points, and +0 to all saving throws. After it detonates, the spider bomb is completely destroyed, regardless of the effects of its detonation. If it survives to the end of the 4-round duration without being detonated, the spider harmlessly loses its explosive charge and falls apart.
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.
ClockworkClockworks are intricate, complex constructs that can be programmed to perform specific functions.
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.
GadgetGadgets are consumable technological inventions with innovative uses.