History of Soulfire Worms

Soulfire Worms are created in Oblation: Soulfed by dunking a Soulfire Charge buff, gained by melee-ing a Soulfire Vessel Knight, into a nearby brazier. The worms are soulfire-infused Hive worms that can be picked up and thrown. Throwing one at a green crystal activates it and opens paths, and the worm explodes in your hands if its timer runs out. The same mechanic returns in the final encounter, where a thrown worm drops a boss's shield.