Dropped by
a Brokenskull swabber (Moors of Ykesha)
a crypt juggernaut (The Crypt of Agony)
a fauna stalker (Moors of Ykesha)
a Rime hydrolated battler (Jarsath Wastes)
a risen brittlebone (Kunzar Jungle)
a Sathirian gravelord (Sebilis)
a sepulchre skeleton (Charasis: Vault of Eternal Sleep)
Aimedaca (Miragul's Phylactery: The Crucible)
Coagulation of Flesh and Evil (Befallen: Necrotic Asylum)
Firelord Kaern (The Deep Forge)
Gelidus Ventus (Ward of Elements)
Haggle Baron Klok (Kurn's Tower)
Jennre Warsinger (Kurn's Tower: Breaching the Void)
Primogen Daishirou (Mistmyr Manor)
Ra'zhish (Najena's Hollow Tower)
Reverie (Miragul's Phylactery: Scion of Ice)
Selgrak the Monster (Emperor Atrebe's Laboratory: The Fabled City of Kor-sha)
Sir Loros Highgarden (Befallen: Halls of the Forsaken)
Slamhammer (Runnyeye: The Gathering)
The Reformed Magolemus (Najena's Hollow Tower)

Mobs that drop this item also drop