Talk:Limbo/@comment-98.22.22.10-20170724100556/@comment-92.44.129.148-20170805025034

Rift surge banishes enemies when they leave the rift (in this case, step 4, where you close the cataclysm), and with banish, comes the knockdown.

I haven't tried, but by the looks of it, it looks like it should open up enemies to finishers without step 5, since they'll already be knocked down, just like when you stasis and then banish an enemy.