You touch a humanoid skull and imbue it with necromantic energy. You can set the skull in a location and specify a trigger condition related to creatures entering a certain radius around the skull, up to 20 feet. When the condition is met, the skull lets out a piercing scream that can be heard up to 100 feet away. The scream lasts for 1 round and does not cause any damage.

When the alarm is triggered, it is both mental and 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. Additionally, when the mental alarm is triggered, you receive a brief mental image of what the skull is seeing at that moment.

The skull remains in place until it screams or until you end the spell. Once the skull has screamed, the spell ends. The skull is not consumed by the spell.