Wyvern Watch

7th-level conjuration

Casting Time:1 action

Range:30 feet

Components:V, S, M (a wyvern scale and a tiny bell)

Duration:8 hours

You conjure a phantom wyvern in an unoccupied space that you can see within range, where it remains for the duration, until you dismiss it as an action, or until you move more than 100 feet away from it. The wyvern is invisible to all creatures except you and can’t be harmed. When a Small or larger creature comes within 30 feet of it without first speaking the password that you specify when you cast this spell, the wyvern starts hissing loudly.

The wyvern sees invisible creatures and can see into the Ethereal Plane. It ignores illusions.

At the start of each of your turns, the wyvern attempts two sting attacks against creatures within 5 feet of it that are hostile to you. The wyvern’s attack bonus is equal to your spellcasting ability modifier + your proficiency bonus. On a hit, it deals 4d8 piercing damage, and the target must make a Wisdom saving throw. If it fails, it is paralyzed. At the end of each of its turns, the target can make another Wisdom saving throw. On a success, the paralysis ends on the target.