Fire Wasp (Patreon)

A fiery red streak shot out of the device, which coalesced into an enormous wasp like creature. Its stark red and black body making it clear it was dangerous enough. What set it apart from most of its kin was the window into its thorax, which seemed to be filled with liquid fire. 

"Behold the fire wasp from the deepest planes of the elemental badlands. Let me show you what it can do!" in 5 minutes the creature had managed to start many fires, explode a nearby stump, feed on the fires it creates and coat the seller's own blade in a fiery sap that burned non-stop for a while. "This baby could be yours for the low low cost of 99.99!"