If you'd prefer to browse the data yourself, we've also provided it in Google Sheets format.
We can't wait to see the community dive into the numbers, optimise new routes and discover how Mortimer fits into your Slayer journey!
FAQ
How do task extensions and unlocks work with Mortimer?
Task extensions will work for Mortimer, but task unlocks that specify certain masters will not. You'll have access to Gryphons, Aquanites, Basilisks and more from the get-go, without needing to invest Slayer Points to unlock them.
Do all unlocked modifiers have an equal chance of appearing?
Yes. Once you've unlocked a modifier type, it has an equal chance of appearing on your assignments.
Can multiple task choices have the same modifier?
Yes, different tasks can have the same modifier.
Can I be offered the same creature more than once?
No. Mortimer will never offer duplicate creatures within the same set of task choices.
Why aren't all Slayer XP bonuses the same?
Slayer tasks already vary significantly in efficiency. Rather than applying a flat bonus across the board, we've balanced XP modifiers individually for each creature.
How will Mortimer affect existing Slayer Masters?
Mortimer isn't designed to replace Duradel, Konar or any other Slayer Master.
While he's intended to reduce the reliance on Turael skipping, that remains a perfectly valid way to approach Slayer if it's what you enjoy.
Duradel and Mortimer are also currently extremely close in terms of XP per hour. Over time, Duradel should continue to improve as more block slots are unlocked and eventually secure a lead over Mortimer. He offers tasks Mortimer cannot assign, notably providing access to many more boss tasks. These can be completed on-task and may appeal to Iron players, Collection Log hunters and pet hunters alike.
Mortimer offers a different style of gameplay, rewarding those of you who enjoy weighing up multiple assignments, modifiers and task lengths.
What's the expected impact on the Imbued Heart?
We're happy to confirm that Mortimer should become the new best Slayer Master for the Imbued Heart compared with current metas where players use Turael to skip for Araxytes and Smoke Devils at Duradel. Players currently place this at around 80 – 100 hours for an Imbued Heart at the top end. Mortimer should be somewhere in the 65 – 80 hour ballpark, also at the top end, once his third task selection has been unlocked.
You'll still be doing your fair share of Araxytes and Smoke Devils on this grind. Those tasks are incredibly strong when it comes to getting the Heart. Between those tasks, we expect you'll complete fast Mortimer tasks and occasionally select a task with a Superior modifier active. It's worth noting that in-game rates can vary drastically based on efficiency, including factors such as gear, blocks, skips and whether you choose to use slaughter or expeditious bracelets.
Regardless of any increase to Hearts per hour, we're confident that completing tasks for Mortimer should feel like a breath of fresh air for Slayer and shake up how the skill feels to engage with!
How do modifiers interact with existing boosts?
Modifiers are applied to the base value for each effect rather than stacking with other bonuses. Existing bonuses are then applied to that updated value.
Does the Slayer XP modifier also affect Superior Slayer monsters?
Yes. The Slayer XP modifier increases the Slayer XP awarded by Superior Slayer monsters as well as their regular variants.
Is the Task Quantity modifier a percentage or a flat adjustment?
The Task Quantity modifier is a flat adjustment, not a percentage. If your task has a Quantity modifier of -50, your assignment will contain 50 fewer creatures than normal. Likewise, a +50 modifier will increase the assignment by 50 creatures.
Will task storage work?
Yes. Task storage will let you store the selected task and its modifiers.
Will the Slayer Cape perk also work?
Yes. You can still get a 10% chance to be reassigned the same task, with the same task length and modifiers.
You can also discuss this update on the 2007Scape subreddit, the Steam forums, or the official OSRS Discord. For more information, check the official Old School Wiki.
Mods Abe, Abyss, Acorn, Ape, Arcane, Archie, Argo, Ash, Asherz, Ayiza, BigRig, Blighted, Blossom, Boko, Brooksie, Bruno, Bulb, Chilly, Criminal, Curse, Daizong, Default, Doctor, Ed, Elena, Enigma, Entropi, Frogs, Fuzz, Gecko, Ghost, Gizmo, Goblin, Grace, Grub, Halo, Harold, Hend, Hornet, Husky, Ivory, Jalo, Jamesy, Jerv, Keyser, Kieren, Kirby, Kurotou, Leebleh, Lenny, Light, Liron, Lotus, Lykos, Mack, Manked, Markos, Maylea, Mobius, Moogle, Morty, Moz, Necro, Nin, Nixon, Nox, Nylu, Oasis, Ori, Other, Otter, Pheasant, Philomel, Pork, Pumpkin, Puppi, Pyro, Rach, Redfield, Rice, Romy, Roy, Ry, Saiyan, Sarnie, Schmidt, Shogun, Shroom, Sigma, Skylark, Smithy, Sova, Spacebar, Spyro, Squid, Starry, Suharun, Surma, Sween, Tide, Titania, Titus, TJ, Tomb, Tsourorf, Tyran, Veda, Vegard, West, Wolfy, Yozora, Yume & Zaf
The Old School Team.