Any evil alignment character is being burnt by the cross, taking 1d4 fire damage every turn they are in contact with the cross.
You may use an action try and banish any Ghost.
Roll a DC 20 Intelligence (Religion) check. On a success the ghost is immedietly banished and disappears, on a failure nothing happens.
If the Ghost is grappled, surprised, or incapacitated the DC is becomes 15 instead.