Alcathar's Twin Stars

When you cast this spell, you touch your forehead and the forehead of a willing creature. Two small orbs of gleaming light appear and enter each of your heads at the points you touch, granting an otherworldly connection between you and the target until the spell ends.

As long as both you and the creature are on the same plane of existence, you can use your action to enter a trance, allowing you to see through the target's eyes and hear what it hears. When you do so, you gain the benefits of any special senses the target has, but are blind and deaf with regard to your own senses. Additionally, you can telepathically speak to the target while in the trance.

While you are in this trance, if the target takes damage from any source, you take psychic damage equal to half of the damage the target takes.

Exiting the trance requires an action

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the duration increases to 8 hours and the target can telepathically communicate with you. When you cast this spell using a spell slot of 6th level or higher, the duration increases to 24 hours and no longer requires concentration.