Mortimer

Requires Combat 100 and Slayer 70 · Wyrmscraig Cavern · 0 (5-40 with modifiers) points per task · block costs 120

  • Requires partial completion of Fallen From Grace (to gain access to Wyrmscraig Cavern)
  • Offers a choice of 2 tasks, or 3 after completing 50 tasks from him
  • Tasks offer modifiers, offering bonuses to task length, reward points, certain drop rates, or Slayer experience
  • Tasks are more expensive to skip (100 points), cannot be skipped with Turael, and have only 2 block slots
  • He only assigns tasks that have superior variants
  • The only Slayer Master who can assign Venators, specifically
  • He is one of two Slayer Masters who can assign Rock slugs, Infernal Mages, Hydras and the Alchemical Hydra boss
Tasks assigned by Mortimer
Task Slayer Amount Extended Weight Chance
Crawling hands
Slayer 5, completion of Priest in Peril
5 35–50 10 3.62%
Cave crawlers
Slayer 10, Combat 10
10 35–50 10 3.62%
Banshees
Slayer 15, Combat 20, completion of Priest in Peril
15 35–50 10 3.62%
Rockslugs
Slayer 20, Combat 20
20 35–50 10 3.62%
Cockatrice
Slayer 25, Combat 25, Defence 20
25 35–50 10 3.62%
Pyrefiends
Slayer 30, Combat 25
30 35–50 10 3.62%
Basilisks
Slayer 40, Combat 40, Defence 20
40 40–60 200–250 10 3.62%
Infernal mages
Slayer 45, Combat 40, completion of Priest in Peril
45 35–50 10 3.62%
Gryphons
Slayer 51, Sailing 45, completion of Troubled Tortugans
51 80–120 160–200 10 3.62%
Jellies
Slayer 52, Combat 57
52 80–120 10 3.62%
Turoth
Slayer 55, Combat 60
55 80–120 10 3.62%
Warped creatures
Slayer 56, completion of The Path of Glouphrie
56 80–120 10 3.62%
Cave horrors
Slayer 58, Combat 85, completion of Cabin Fever
58 80–120 200–250 10 3.62%
Aberrant spectres
Slayer 60, Combat 65, completion of Priest in Peril
60 80–120 200–250 10 3.62%
Wyrms
Slayer 62
62 80–120 200–250 10 3.62%
Kurask
Slayer 70, Combat 65
70 40–60 10 3.62%
Venators
Slayer 74, Combat 60, completion of The Blood Moon Rises
74 120–180 10 3.62%
Gargoyles
Slayer 75, Combat 80, completion of Priest in Peril
75 120–180 200–250 10 3.62%
Aquanites
Slayer 78, Sailing 73
78 40–60 150–200 10 3.62%
Drakes
Slayer 84
84 40–60 10 3.62%
Dark beasts
Slayer 90, Combat 90, started Mourning's End Part II
90 40–60 110–135 10 3.62%
Hydras
Slayer 95
95 150–200 10 3.62%
Bloodvelds
Slayer 50, Combat 50, completion of Priest in Peril
50 120–180 200–250 8 2.90%
Custodian stalkers
Slayer 54, completion of Shadows of Custodia
54 80–120 200–250 8 2.90%
Dust devils
Slayer 65, Combat 70, partial completion of Desert Treasure I
65 120–180 200–250 8 2.90%
Nechryael
Slayer 80, Combat 85, completion of Priest in Peril
80 150–200 200–250 8 2.90%
Abyssal demons
Slayer 85, Combat 85, completion of Priest in Peril or Fairytale II - Cure a Queen
85 120–180 200–250 8 2.90%
Araxytes
Slayer 92, Completion of Priest in Peril
92 120–180 200–250 8 2.90%
Smoke devils
Slayer 93, Combat 85
93 80–120 8 2.90%

Assignment chance is base weight ÷ total weight (276) with every unlockable task counted — your personal odds shift with unlocks and blocks. Quantities and weights ingested from the Mortimer wiki page .