Chester's Agonizing Prison

You vanish from your current plane of existence and appear in the Ethereal Plane. While in the Ethereal Realm you may not act in any way that affects either realms. As an action, you may choose to end the spell and return to your original realm in the exact space that you have started the spell. If the space is occupied, you deal 3d10 force damage to the creature and yourself. If the spell ends before returning to your your original realm, your character is trapped in the Ethereal Realm until rescued by your own means or others