so how this was made was some pillagers in a woodland mansion wanted a new creeper.(to pillage, of course)But, the only material left was wood. they were resourceful and also put lava into a glass box and put it into the creeper. so, whenever it explodes, it leaves lava around. And it backfired because when it was made alive, it exploded. Some people say there is one roaming still AND that the mansion is still burning to this day.