Wind in the High Country
A parchment containing an infernal diagram.
The user of this parchment gains 1 Infernal Power point and can use the detect planar intrusion cantrip. Intelligence is the spellcasting ability for this cantrip. An infernal diagram can be used once before its magic fades.
DETECT PLANAR INTRUSION
Casting Time: 1 action
Components: V, S
Duration: Concentration, up to 1 minute
For the duration, you know when and where any creature enters or leaves your plane of existence if that point is within 30 feet of you. You can differentiate between incoming and outgoing planar transfers.