Ethereal Transfer

Your people are clever, after centuries of being trapped between the material and ethereal plans they have found a way of bringing an object or item equal or less than their size to the ethereal plane and leave it hidden there for a time as well as bring it back to the material plane. While the item is in the ethereal plan the disembodied will know if it is moved and where it went.

You can also let another humanoid creature briefly see into the ethereal plane by placing your hands on the sides of their face and channeling the ethereal energy in your body through them

To take 1 item into the ethereal plane you must sacrifice 1D4 Hit points to channel the energy needed to make the object ethereal. It also cost 1D4 hit points to bring the object back to the material plane.

To let another humanoid see into the ethereal plane you must sacrifice 2D4 hit points to channel the needed energy for them to see the ethereal plane. This connection can last up to one minute.