I found this on another site, but didn't see it here and thought y'all would like to know about it.
If you double-tap a direction key you will do a jump in that direction and receive a short buff. The jump it self takes about 3 seconds so it's a pretty big waste of time, but if you tap X as you are jumping you will stop the jump but keep the buff.
This is useful for quick stuns for interrupting casts. Tap W twice then X right after and stun them. Have fun :wave: