- Two can be found in a side room after climbing down from the rooftops and before the second Lothric Knight, who wields a spear.
- Dropped by Man-grubs.
Upon use, an Undead Hunter Charm is thrown to the ground, releasing a white cloud that affects anyone that steps into it. The cloud persists for a short duration, meaning targets do not have to be hit directly for them to be affected.
Their main effect is the ability to temporarily prevent opponents from healing with Estus or Ashen Estus Flasks. The effect lasts roughly 25 seconds. Other forms of healing, such as Siegbräu or miracles, can still be used while under the effect of a charm.
They may also be thrown at Mimics, forcing them to go into a lethargic state after which they can be looted safely. Additionally, the Mimic has a chance to drop a Symbol of Avarice every time it is put to sleep by a charm.
When thrown at glowing-eyed Skeletons, it will prevent them from reanimating, allowing them to be killed the first time around.