Contract of glyphic attenuation
Dropped on 3 slayer drop tables · wiki page
| Monster | Table | Qty | Rate | Chance per avg task | Assigned by |
|---|---|---|---|---|---|
| Black demon Level 172, 178, and 184 | Chasm of Fire tertiary | 1 | 1/53 | 95.7% | Krystilia 100–150 Chaeldar 70–130 Konar 120–170 Nieve 120–185 Duradel 130–200 |
| Greater demon Level 92, 100, 101, and 113 | Chasm of Fire tertiary | 1 | 1/81 | 87.1% | Krystilia 100–150 Chaeldar 70–130 Konar 120–170 Nieve 120–185 Duradel 130–200 |
| Lesser demon Level 82, 87, and 94 | Chasm of Fire tertiary | 1 | 1/123 | 55.8% | Krystilia 80–120 Vannaka 40–90 Chaeldar 70–130 |
Rates from the OSRS Wiki drop tables (Drop Rate Project). "Chance per avg task" uses the midpoint task size of the highest master that assigns the monster.