Dropped by:

• The Howling Stones
• a helot spirit (10%)
• an undertaker skeleton (0.02%)
• hexbone skeleton (15%)
• a helot spectre (6.8%)
• elementalbone skeleton (4.9%)
• an undead oblation (1.2%)
• a sepulcher spectre (4.2%)
• a hamal skeleton (15%)
• a bottomless devourer (13%)
• a helot skeleton (5.9%)