Waypoint

This spell allows the creation of a waypoint, a magical beam of light that lets you travel between other waypoints that you have visited, and is often used by people who need to travel around swiftly. When casting, roll a d20. This will be called the current number, if this is a new waypoint. If you cast this on an unfinished waypoint, a waypoint that doesn't have a current number of at least 40, add the roll to the current number. The sum of those numbers is now the new current number. If the current number ever reaches 40, then the waypoint is finished and will permanently remain there, otherwise, the waypoint will vanish after the spell ends.