The short version
30-second read- Guaranteed Mimic on your 10th master or 25th elite. That only counts while encounters are enabled and you have never had one.
- Eat instead of leaving to restock. Every exit or death costs a loot roll and drops master casket ring odds from 6/228 to 6/240.
- Ignore the Third Age minions. The warrior, mage and ranger drop nothing and respawn on the next candy throw.
- Magic hits its weakest defence. Its magic defence is only +30, against +145 or more for every other style.
Overview: The Mimic at a Glance
The Mimic is a level 186 clue scroll boss fought upstairs in Watson's house in Hosidius. The chance to meet it is off by default: ask the strange casket upstairs to enable it, and from then on 1 in 35 elite reward caskets and 1 in 15 master reward caskets turn into a mimic casket. If encounters are on and you have never met one, your 10th master or 25th elite casket is a guaranteed Mimic.
The fight is short. Pray Protect from Melee, step off your tile when it throws candy, ignore the Third Age minions and kill it on the first attempt for the best odds at a ring of 3rd age: 6/228 from a master casket and 6/250 from an elite one.
| Field | Detail |
|---|---|
| Classification | Clue scroll boss (Mini-boss in our index) |
| Difficulty | 3 / 5 in our boss index |
| Solo or team | Solo |
| How to unlock | Enable it at the strange casket, then get a mimic casket from an elite (1/35) or master (1/15) reward casket |
| Attempts | 6 from a master casket, 5 from an elite casket |
| Notable reward | Ring of 3rd age, 3rd age equipment |
| Main mechanic | Candy throw: move off your tile or take about 10 damage |
| Hitpoints | 230 |
| Max hit | 23 |
| Released | 11 April 2019 |
How to Enable the Mimic
- 1
Go upstairs in Watson's house, the large fenced house west of the Forthos Ruin in Hosidius.
- 2
Ask the strange casket to enable Mimic encounters.
If you never spoke to it before your first elite or master casket, the game lets you choose at that point.
- 3
Complete elite or master clues.
Each elite reward casket has a 1/35 chance to be a mimic casket and each master casket a 1/15 chance.
- 4
Take the mimic casket back to the strange casket upstairs and start the fight.
Since the 9 July 2025 update, your 10th master or 25th elite casket gives a Mimic if encounters are enabled and you have not had one yet. If you are already past that count, the next casket of that tier is the guaranteed one. Getting the clues in the first place is covered in the Treasure Trails guide.
Recommended Combat Stats and Gear
The wiki suggests 80+ Magic for a magic kill or 90+ Ranged for ranged, 80 Attack and Strength if you open with melee special attacks, 70 Defence and 45 Prayer (74 if you want Rigour for ranged). High-level accounts kill it before the minions matter; around 70 combat stats it is a real fight.
| Check | Value |
|---|---|
| Protection prayer | Protect from Melee (candy and stomp are avoided by moving) |
| Its Defence level | 120 |
| Its Magic level | 60 |
| Magic defence bonus | +30, its weakest by far |
| Melee defence bonuses | +150 crush, +160 stab, +165 slash |
| Ranged defence bonuses | +145 |
| Poison and venom | Immune |
- Melee opener: two or four special attacks with dragon claws, burning claws or a dragon dagger in melee gear, then switch to a powered staff.
- Powered staves such as Tumeken's shadow, the Sanguinesti staff or a trident make short work of its +30 Magic defence.
- Lower levels: freeze it with Entangle or an ice spell. While it is frozen and you stand away from it, it cannot use its melee or stomp.
- Ranged works with a toxic blowpipe, but Magic is the better style here.
Inventory and Supplies
- Food for a 23 max hit, plus roughly 10 per candy volley you fail to dodge.
- Prayer potions or super restores to hold Protect from Melee.
- Stat-boosting potions, and an imbued or saturated heart's invigorate before you enter if you use Magic.
- Your special attack weapon and powered staff if you use the melee opener.
Mechanics: Attack Styles, Max Hits and Immunities
| Property | Value |
|---|---|
| Combat level | 186 |
| Attack styles | Crush, Magic |
| Attack speed | 3 ticks |
| Attacks on sight | No |
| Poisons you | No |
| Size | 5 tiles |
- Melee: it only hits you when you stand next to it, and Protect from Melee covers it.
- Candy: it throws six candies, three purple plus one red, one blue and one green. Stay put and you take about 10 damage. The red, blue and green candies spawn a Third Age Warrior, Mage and Ranger, which drop nothing and respawn on the next throw, so ignore them.
- Stomp: it steps forward onto you, or you walk under it. Damage goes 1, 1, 1, 2, 2, 2, 3 and so on per tick, capped at 6, and resets as soon as you step out.
Fight Strategy: Kill It First Try
- 1
Drink your boosts and turn on Protect from Melee before you enter.
- 2
Open with your special attacks in melee gear, then switch to your staff.
- 3
When it throws candy, move a tile or two.
Never stand under it.
- 4
Leave the Third Age minions alone.
- 5
Eat rather than leave when your HP drops, because every exit costs a loot roll.
You get six attempts from a master casket and five from an elite one, matching the casket's reward rolls. Each time you leave or die you lose one roll, and failing every attempt means no loot from that clue at all. Dying on the same tick the Mimic dies does not cost a roll, though you still collect your items from Watson's house.
Drops and What The Mimic Is Worth
Every kill gives a mahogany plank, a roll on the Mimic's main table and a separate chance at its rare table, on top of the clue's normal reward rolls. The rare table rates drop slightly if the kill takes more than one attempt.
| Drop | Master casket | Elite casket |
|---|---|---|
| Ring of 3rd age | 6/228 (about 1/38) | 6/250 (about 1/42) |
| Any 3rd age item | 1/228 | 1/250 |
| Each specific 3rd age piece | 1/5,244 | 1/5,750 |
| Same rolls after a failed attempt | 6/240 and 1/240 | 6/264 and 1/264 |
The main table gives one of: up to 600 death runes, up to 500 blood runes, 25 noted grimy ranarr weed, 25 noted wines of Zamorak or 15 noted raw manta rays. Each failed attempt cuts the quantity, by a sixth of the maximum on a master Mimic and a fifth on an elite one.
Your first kill also drops a Mimic scroll case, which raises the scroll box stack limit by one for every clue tier.
Combat Achievements
The Mimic has one task, Mimic Veteran: kill the Mimic once. It sits in the Elite tier and is worth 4 points, so the first mimic casket you get is an easy Elite task.
Ironman Notes
Irons roll the same rare table, and the main table's noted ranarr, wine of Zamorak, manta rays and runes are all useful supplies. Irons without a trident or better should use the melee method. Wear melee gear, drink super attack and super strength, use Piety, pray Protect from Melee, then switch to Protect from Magic when the Third Age Mage appears. With a trident or better, freeze it with Entangle or an ice spell and stay out of melee range.
Common Mistakes and Death Causes
- Never enabling encounters at the strange casket, so no casket can roll the Mimic.
- Standing still during the candy throw and losing about 10 HP per volley.
- Walking under it and letting the stomp damage climb toward 6 a tick.
- Killing the Third Age minions, which drop nothing and come back.
- Leaving to restock, which removes one loot roll each time.
FAQ
How do you enable the Mimic in OSRS?
Ask the strange casket upstairs in Watson's house in Hosidius to enable Mimic encounters. It is off by default.
What do I need to fight The Mimic?
A mimic casket, which only comes from elite (1/35) or master (1/15) reward caskets after you enable encounters. There is no separate skill or quest requirement for the fight.
What should I pray against the Mimic?
Protect from Melee if you kill it with Magic. On the melee method, switch to Protect from Magic once the Third Age Mage spawns, because you tank the hits in melee gear.
How hard does The Mimic hit?
Its max hit is 23. It has 230 hitpoints and a combat level of 186.
What happens if I die to the Mimic?
You lose one loot roll and collect your items at Watson's house. A master casket gives six attempts and an elite casket five.
Is The Mimic worth doing?
Yes, whenever you get one. A first-try kill from a master casket has about a 1/38 chance at a ring of 3rd age, and the main table adds supplies on top of the casket's normal rolls.
Still stuck on a mechanic? Ask the team on our Discord, it is free.
Bottom Line
Enable encounters at the strange casket now, even if you rarely do elite clues, because the guaranteed Mimic only counts while they are on. Then pray melee, keep moving during the candy and kill it in one go.
If The Mimic is blocking a Combat Achievement or an unlock you want, our PvM service is done by hand. Otherwise the bosses list has the full index.
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