Thousand Teeth's Gaze

While wearing the magic item, 'Thousand Teeth's Gaze, +1", the following spell can be used;

Once per long rest, a creature attuned to this item can slip into the ethereal plane. At the beginning of their next turn they return to the material plane. While in the ethereal plane creatures cannot target them with attacks or spells if they are not on the same plane of existence of the creature. The creature attuned to this item may not make any attacks or cast any spells that target anyone on the material plane. They may pass through walls and creatures as if they were difficult terrain. If the creature returns while in a wall or floor they take 6d6 force damage and is pushed to the next available space.