Alarm (One)

 One D&D Varied 
see Sources below

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Unearthed Arcana
Noncanon

Alarm ^{[SRD5 OGL]}  (Spell)
Level: 1st-level
Class List: Artificer, Ranger, Wizard
School: Abjuration
Casting Time: 1 minute (Ritual)
Range:  30 feet
Components: V, S, M (a tiny bell and piece of fine silver wire)
Duration: 8 hours
Scales: False

You set an alarm against unwanted intrusion. Choose a door, a window, or an area within range that is no larger than a 20-foot cube. Until the spell ends, an alarm alerts you whenever a Tiny or larger creature touches or enters the warded area. When you cast the spell, you can designate creatures that won't set off the alarm. You also choose whether the alarm is mental or audible.

A mental alarm alerts you with a ping in your mind if you are within 1 mile of the warded area. This ping awakens you if you are sleeping.

An audible alarm produces the sound of a hand bell for 10 seconds within 60 feet.

Sources and Notes

One D&D is Playtest Material Only These game mechanics are in draft form, usable in your D&D campaign but not refined by full game development and editing. They aren’t officially part of the game and aren’t permitted in D&D Adventurers League events, nor are they available for use on D&D Beyond.

— D&D Beyond One D&D Playtest material

Unearthed Arcana The material in Unearthed Arcana is not Official Material. It is presented for playtesting and to spark your imagination. These game mechanics are in draft form, usable in your campaign but not refined by final game development and editing. They are not officially part of the game. For these reasons, material in this column is not legal in D&D Adventurers League events.

—Notice on most 5e Unearthed Arcana PDFs

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