Mortimer's tasks
Wyrmscraig Cavern. Needs combat 100, 70 Slayer. Added 29 Jul 2026. Offers a choice of 2 tasks (3 after 50 tasks), only monsters with superior variants, and "Mortifier" modifiers (points 5-40, quantity, XP, clue, superior-unique). Separate streak; only two block slots. Not in the requested list, included for completeness.
| Task | Slayer | Weight | Amount | Ironman call |
|---|---|---|---|---|
| Aberrant spectres | 60 | 10 (3.6%) | 80–120extended 200–250 | Do it, and extend it |
| AquanitesUnlock: Lured In | 78 | 10 (3.6%) | 40–60extended 150–200 | Do it |
| Banshees | 15 | 10 (3.6%) | 35–50 | Do it |
| BasilisksUnlock: Basilocked | 40 | 10 (3.6%) | 40–60extended 200–250 | Do it |
| Cave crawlers | 10 | 10 (3.6%) | 35–50 | Do it |
| Cave horrors | 58 | 10 (3.6%) | 80–120extended 200–250 | Do it |
| Cockatrice | 25 | 10 (3.6%) | 35–50 | Do it |
| Crawling hands | 5 | 10 (3.6%) | 35–50 | Do it |
| Dark beasts | 90 | 10 (3.6%) | 40–60extended 110–135 | Do it, and extend it |
| Drakes | 84 | 10 (3.6%) | 40–60 | Do it |
| Gargoyles | 75 | 10 (3.6%) | 120–180extended 200–250 | Do it, and extend it |
| GryphonsUnlock: Wings Spread | 51 | 10 (3.6%) | 80–120extended 160–200 | Do it |
| Hydras | 95 | 10 (3.6%) | 150–200 | Do it |
| Infernal mages | 45 | 10 (3.6%) | 35–50 | Do it |
| Jellies | 52 | 10 (3.6%) | 80–120 | Do it |
| Kurask | 70 | 10 (3.6%) | 40–60 | Do it |
| Pyrefiends | 30 | 10 (3.6%) | 35–50 | Do it |
| Rockslugs | 20 | 10 (3.6%) | 35–50 | Do it |
| Turoth | 55 | 10 (3.6%) | 80–120 | Skip it |
| Venators | 74 | 10 (3.6%) | 120–180 | Do it |
| Warped creaturesUnlock: Warped Reality | 56 | 10 (3.6%) | 80–120 | Block it |
| Wyrms | 62 | 10 (3.6%) | 80–120extended 200–250 | Do it |
| Abyssal demons | 85 | 8 (2.9%) | 120–180extended 200–250 | Do it, and extend it |
| Araxytes | 92 | 8 (2.9%) | 120–180extended 200–250 | Do it, and extend it |
| Bloodveld | 50 | 8 (2.9%) | 120–180extended 200–250 | Do it, and extend it |
| Custodian stalkers | 54 | 8 (2.9%) | 80–120extended 200–250 | Do it |
| Dust devils | 65 | 8 (2.9%) | 120–180extended 200–250 | Do it, and extend it |
| Nechryael | 80 | 8 (2.9%) | 150–200extended 200–250 | Do it, and extend it |
| Smoke devils | 93 | 8 (2.9%) | 80–120 | Do it |
Chances ignore blocks and unlocks, which change the real odds. blockSkipAdvice is an Ironman-leaning consensus summary, not wiki data. Want your best gear and kill time for a task? Look yourself up and open the planner's Slayer tab.
Weights and amounts from the Old School RuneScape Wiki (CC BY-NC-SA 3.0), fetched 2026-10-01.