1) Windblast and then drop assassinate the falling target. If you're playing Daud, you can try to Blink to another target before hitting the ground. My max is still two guards.
2) Put a spring razor on a rat, possess it, then run over to a crowd. Don't use an arc mine, because it kills you as well when you leave Possession.
3) Wants extra range for a grenade? Throw it, then windblast it toward the target.
4) Windblast a Pendleton out of the window is always hilarious.
Couple of theories that I need to test:
1) Throw a grenade, then bend time, then throw a grenade with shorter fuse. This way the second grenade will explode the first grenade, resulting in a double explosion.
2) Windblast two guards into each other? With level 2 windblast, throwing a guard into a wall is enough to kill him... But what if you throw a guard into another guard? Does Windblast even stop with Bend Time, or do you have to Windblast, THEN quickly Bend Time?