This is meant to be used by a single player.

Find new sneaky ways to use Reaper's Shadow Step, with a sphere of color that shows you where you can and can't go at a glance, and/or just how close you need to be to reach certain areas!

The edge of the sphere is the edge of your range, so once a bit of high ground or something is visible, you should also be able to Step to it.

Also, in the course of making this, I discovered Shadow Step's range is 36m, not 35m as the wiki says.