The Elder Scrolls: Tamriel

You step halfway into the spirit realm, becoming ethereal for the next 2 turns. While ethereal, you can move through objects and creatures as if they were difficult terrain, are immune to all non-magical damage, and cannot be targeted by spells or effects that don’t reach into the Ethereal Plane. You cannot attack, cast spells, or interact with the physical world, but can end the effect early as a free action. If you are midair when the effect ends, you fall, and magical barriers still block your movement.