Whenever you finish a Long Rest while holding Cartographer's Tools, you can use that tool to create a set of magical maps by touching at least two creatures (one of whom can be yourself), up to a maximum number of creatures equal to 1 plus your Intelligence modifier (minimum of two creatures). Each target receives a magical map, which constantly updates to show the relative position of all the map holders but is illegible to all others. The maps last until you die or until you use this feature again, at which point any existing maps created by this feature immediately vanish.
While carrying the map, a target gains the following benefits.
Awareness
The target adds 1d4 to its Initiative rolls.
Positioning
The target knows the location of all other map holders that are on the same plane of existence as itself. When casting a spell or creating another effect that requires being able to see the effect's target, a map holder can target another map holder regardless of sight or cover, so long as the other map holder is still within the effect's range.