Arcane Marking

You create an arcane mark on a creature or item you can see within range. The mark is invisible, but is revealed through a spell such as Detect Magic. As long as the mark exists, you know it's exact location as long as it is in the same plane as you. If the creature or item is on a different, plane you know in which plane it is

At any given time, you may have up to five Arcane Markings active, in order to create a sixth marking first you must dispel one of the previous. You may dispel a mark as a bonus action.