- Rare drop from Chaos Bugs.
- Uncommon drop from Chaos Eaters and Burrowing Rockworms.
- Guaranteed drop by second Kiln Black Knight.
- Guaranteed drop by both Black Knight in Undead Asylum.
- One per playthrough can be obtained by trading a non-upgraded Pyromancy Flame to Snuggly the Crow.
- One can be found on a corpse on the raised platform at the top of the staircase leading out of the poison swamp in Lost Izalith. Another can be found on a corpse in the swamp pit where multiple Chaos Eaters are located.
- Two are located in The Great Hollow on corpses, both are located above the second set of Basilisks on branches.