OSRS Elite Clue Mimic Boss Fight Ultimate Guide

In Old School RuneScape (OSRS), the Mimic boss fight adds a thrilling twist to the Treasure Trails experience, transforming an elite clue scroll reward into a challenging battle. This sporadic boss, encountered when opening an elite or master reward casket, offers unique rewards like 3rd Age equipment but demands preparation and strategy. In this guide, we’ll walk you through everything you need to know to conquer the Mimic boss fight from an elite clue, from enabling the encounter to optimizing your combat setup.

The Mimic is a rare boss that appears when you attempt to open an elite or master reward casket, provided you’ve enabled the option. For elite clues, there’s a 1/35 chance the casket becomes a Mimic, while master clues have a 1/15 chance. To face it, you present the Mimic casket to the strange casket upstairs in Watson’s house in Hosidius. Players get five attempts to defeat the Mimic from an elite clue, with each failure reducing the number of reward rolls.

How to Enable the Mimic Encounter

Before you can fight the Mimic, you must activate the option:

Visit Watson’s House: Head to Hosidius and go upstairs to find the strange casket.
Speak to the Casket: Interact with it to enable Mimic caskets for elite and master clues. This is disabled by default.
Confirmation: If you try opening an elite casket without enabling it, the game prompts you to choose whether to allow Mimic encounters.

Once enabled, every elite casket you open has a chance to become a Mimic, adding excitement to your clue-hunting grind.

Why Fight the Mimic?

Defeating the Mimic grants the standard 4–6 reward rolls from an elite clue, plus a chance at bonus loot, including:

3rd Age Equipment: Rare items with a 1/250 chance per roll for elites.
Gilded Armor: A 1/2,932.5 chance per roll, adding cosmetic flair.
Bonus Loot: Occasionally, you get an extra roll (1/44 chance, or 1/41.8 if killed on the first try).

Failing all attempts means no rewards, so preparation is key.

Preparing for the Mimic Boss Fight

The Mimic is no pushover, with a combat level of 186 and multiple attack styles. Proper gear, inventory, and knowledge of its mechanics are essential for victory.

Recommended Gear Setup

The Mimic primarily uses melee crush attacks but also spawns minions and throws candies that deal damage. Since it’s weak to magic, a magic-based setup is ideal, though melee and ranged are viable. Here’s a suggested gear setup:

Slot	High-End Gear	Budget Gear
Head	Ancestral Hat	Ahrim’s Hood
Body	Ancestral Robe Top	Ahrim’s Robetop
Legs	Ancestral Robe Bottom	Ahrim’s Robeskirt
Weapon	Kodai Wand	Trident of the Seas
Shield	Arcane Spirit Shield	Mage’s Book
Cape	Imbued God Cape	God Cape

Special Attack Weapon: Bring dragon claws or a dragon dagger (p++) for high-damage special attacks to speed up the fight.

Inventory Setup

Your inventory should balance offense, defense, and sustainability. Here’s a sample:

Food: 10–12 sharks or Saradomin brews for healing.
Potions: 2–3 super restores, 1 magic potion, 1 ranging potion (if using blowpipe).
Prayer: 2–3 prayer potions to maintain Protect from Melee.
Teleport: Emergency teleport (e.g., teleport tablet) for safety.
Runes: Enough for 100+ casts of your chosen spell (e.g., Ice Barrage or Fire Surge).

Lower-level players should bring extra food and prayer potions, as the fight can be tougher without high-end gear.

Understanding the Mimic’s Attacks

The Mimic uses a variety of attacks that require quick reactions to minimize damage. Knowing these patterns will help you stay alive and focus on dealing damage.

Melee Attack

If you’re in melee range, the Mimic delivers a crush-based melee attack that hits hard. Always use Protect from Melee to mitigate this damage. Keep your distance if using magic or ranged to avoid this entirely.

Candy Attack

The Mimic throws six candies in a pattern: three purple, one red, one blue, and one green. Each candy targets a tile, dealing around 10 damage if you don’t move. The colored candies (red, blue, green) spawn Third Age minions:

Red: Third Age Warrior (melee).
Blue: Third Age Mage (magic).
Green: Third Age Ranger (ranged).

Tip: Ignore the minions—they despawn when new candies are thrown. Focus on dodging by moving one tile away from the candy’s landing spot.

Special Considerations

The Mimic moves toward you constantly, so stay mobile. If you stand under it, you take 6 damage per tick, which can stack up fast. Keep circling the room to maintain distance and avoid unnecessary hits.

Combat Strategies for Success

With the right strategy, the Mimic becomes manageable, even for mid-level players. Here are tailored approaches based on your combat style.

Magic Strategy

Since the Mimic is weak to magic, this is the most efficient method:

Pre-Fight: Boost with a magic potion and Imbued Heart (if available). Activate Protect from Melee.
Spells: Use high-damage spells like Fire Surge or Ice Barrage to freeze the Mimic, preventing melee attacks.
Special Attacks: Use dragon claws or dragon dagger specials early to chunk its health.
Movement: Run around the room to dodge candies while casting. Avoid standing still.

High-level players with Kodai or Sang can breeze through, while budget setups like Trident still work well.

Ranged Strategy

Ranged is a solid alternative, especially with a toxic blowpipe:

Pre-Fight: Drink a ranging potion and activate Protect from Melee.
Weapon: Toxic blowpipe with adamant or better darts for fast, consistent damage.
Special Attacks: Pair with dragon claws or dragon dagger for burst damage.
Movement: Keep distance to avoid melee hits and sidestep candies.

This setup is great for players with high ranged stats but lacks the freezing utility of magic.

Melee Strategy

Melee is riskier due to the Mimic’s crush attacks but viable with high stats:

Gear: Prioritize high-defense melee armor (e.g., Torag’s or Bandos).
Weapon: Use a whip or abyssal bludgeon, with dragon claws for specials.
Prayer: Keep Protect from Melee on at all times.
Tactic: Hit and move to avoid candy damage and minion clutter.

Melee is best for experienced players who can prayer-flick and manage positioning.

Tips for Maximizing Rewards

Beyond surviving the fight, you want to optimize your loot. Here’s how:

Kill It on the First Try

Defeating the Mimic on your first attempt boosts the bonus loot chance from 1/44 to 1/41.8, slightly improving your odds for rare drops like 3rd Age gear. Practice the fight in lower-stakes scenarios (e.g., with budget gear) to master the mechanics.

Understand Reward Rolls

Elite caskets give 4–6 rewards, and the Mimic doesn’t reduce this unless you fail all five attempts. The 3rd Age table has a 1/250 chance per roll, so more rolls (from successful kills) mean better odds. Check your loot at Watson’s house after leaving the fight area—you can’t open the casket during the battle.

Manage Deaths

If you die, you can reclaim items from Watson’s house for 90,000 GP. Simultaneous death with the Mimic doesn’t reduce reward rolls, but avoid this by keeping health above 30. Always have an emergency teleport ready.

With these strategies, you’re ready to tackle the Mimic boss and claim those elite clue rewards. Happy hunting, and may RNG favor you!