Some inaccuracies in this guide. Dark Wind allows you to cancel into any other skill with no delay, including Divine Drive. You don't use it as a standalone knockdown poke because Dark Wind has high delay if you don't combo into and out of it.
The guide also fails to mention that using skills in the air thanks to the Air Master passive also costs Active Points (the green bar under HP/MP). The same goes for cancelling into Short Distance Teleport.
Where's the link to where you pulled this guide from?