Duke Sucellus

Should you fight this?

What you get out of Duke Sucellus, so you can decide if it fits your goals right now.

• Magus vestige builds the Magus ring; Virtus robes drop here too.
• Eye of the duke is a Soulreaper axe component (a top-tier melee weapon).
• One of the fastest DT2 bosses once the wake-up rhythm is learned.

How to get there

The best ways to reach Duke Sucellus (Ghorrock Prison) (for Duke Sucellus) in Weiss, northern Fremennik. Requirements are checked against your account on the readiness panel above.

Checking your best route…

Gear setups

Pick the setup that matches your bank. Every upgrade here links back to the Gear hub.

Strategy

1. 1

   Wake him first

   Duke starts asleep and takes no damage until woken — brew the two poisons from the asylum vats (twelve of each powder plus salt) and apply them to start the fight.

2. 2

   Settle into the slash rhythm

   It's a stationary, rhythm-based fight — bring a slash weapon (he's slash-weak), learn the five-tick attack cycle, and it becomes one of the faster DT2 bosses.

Key mechanics

What can kill you at Duke Sucellus, and what to do about it. For the full breakdown, see the OSRS Wiki link below.

• Alternating melee / ranged

  In melee range he raises then slams his arms (up to 56); at range he throws a blue projectile (up to ~48) — pray the overhead that matches your distance.

• Freezing gaze

  Every fifth attack he gazes for up to ~100 damage — break line of sight behind a pillar as it comes.

• Gas flare

  Gas erupts near the vents (up to ~12) and gets more frequent as his HP drops — don't stand next to a venting tile.

Notable drops

Item	Rarity	Value
Virtus robe bottom Unique	1/2160	22.5m
Magus vestige Unique	1/720	—
Eye of the duke Unique	1/720	—
Awakener's orb Unique	1/49	279.9k
Baron	1/2500	—

Drop probability by KC

For every Duke Sucellusdrop with a fixed rate, see the chance you’ve received at least one copy by your kill count. Sign in with a linked account to use your live KC.

Your Duke Sucellus kill count

Enter your KC to see the chance you’ve seen each drop at least once.

Drop	Rate	Chance by KC
Virtus robe bottom Unique	1/2160	—
Magus vestige Unique	1/720	—
Eye of the duke Unique	1/720	—
Awakener's orb Unique	1/49	—
Baron	1/2500	—

These figures are an independent-roll estimate: they treat every kill as a separate roll at the listed rate ( 1 − (1 − p)^KC). Real drops can involve guaranteed rolls, point/invocation scaling or completion rewards, so the true odds may differ. A probability is never a guarantee — even far above 90%, the drop is never owed to you. Drops without a fixed 1/Nrate show “—”.

Prerequisite quests

Quests that gate access to Duke Sucellus, plus the quest chain each one sits behind.

Progression after this boss

Once Duke Sucellus feels comfortable, these are the natural next steps up in difficulty and payout.

Frequently asked questions