I'm creating an anime styled fight scene video - nothing too advanced, just something simple, and I'm looking for a way to generate shockwaves and explosions, that I can use in my footage. I can't find any suitable explosions (I want a white explosion, with no smoke), and I have *no idea* how to generate a shockwave. (Think of it like a small circle, transparent in the middle, but each side distorts the original footage as if you were looking through water).

Any ideas?