Mordenkainen’s Private Sanctum spell icon: a locked door
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Mordenkainen’s Private Sanctum (Private Sanctum) 5e spell

4th-level abjuration · called Private Sanctum in the SRD 5.1 · 2024 version below

Casting time
10 minutes
Range
120 feet
Components
V, S, M (A thin sheet of lead, a piece of opaque glass, a wad of cotton or cloth, and powdered chrysolite)
Duration
24 hours
School
Abjuration
Level
4

You make an area within range magically secure. The area is a cube that can be as small as 5 feet to as large as 100 feet on each side. The spell lasts for the duration or until you use an action to dismiss it.

When you cast the spell, you decide what sort of security the spell provides, choosing any or all of the following properties:

Casting this spell on the same spot every day for a year makes this effect permanent.

At higher levels

When you cast this spell using a spell slot of 5th level or higher, you can increase the size of the cube by 100 feet for each slot level beyond 4th. Thus you could protect a cube that can be up to 200 feet on one side by using a spell slot of 5th level.

Classes that can cast Private Sanctum

ClassFirst availableSpellcasting ability
Wizard spells7th character levelIntelligence

Private Sanctum in the 2024 rules

The 2024 Player’s Handbook revised many spells, and the SRD 5.2 carries the new text. What changed from the 2014 version above:

Same level, casting time, range, components, duration and dice; the text is reworded for the 2024 rules glossary.

Casting time
10 minutes
Range
120 feet
Components
V, S, M (a thin sheet of lead)
Duration
24 hours
School
Abjuration
Level
4
Classes
Wizard

You make an area within range magically secure. The area is a Cube that can be as small as 5 feet to as large as 100 feet on each side. The spell lasts for the duration.

When you cast the spell, you decide what sort of security the spell provides, choosing any of the following properties: • Sound can't pass through the barrier at the edge of the warded area. • The barrier of the warded area appears dark and foggy, preventing vision (including Darkvision) through it. • Sensors created by Divination spells can't appear inside the protected area or pass through the barrier at its perimeter. • Creatures in the area can't be targeted by Divination spells. • Nothing can teleport into or out of the warded area. • Planar travel is blocked within the warded area.

Casting this spell on the same spot every day for 365 days makes the spell last until dispelled.

Using a Higher-Level Spell Slot. You can increase the size of the Cube by 100 feet for each spell slot level above 4.

2024 version from the SRD 5.2. Most tables settle on one edition, so check which one yours uses.

Other 4th-level abjuration spells

Browse: all 4th-level spells · abjuration spells