Graverobber's Sword

An epic fantasy novel featuring Kera No-Clan, a barbarian living in exile getting by (and getting high) by robbing graves, pilfering tombs, and looting ruins.
While digging for fae ash - a valuable narcotic known as ''fairy dust'', sought after for its potency and powerful magical side effects - Kera uncovers a living weapon, a psychic sword that calls itself Zephelous.
Zephelous senses a greatness...