We need something that behaves vaguely like thunder (ignoring velocity and generally meandering around), but has the opposite explosive qualities. Something that produces a massive burst of vacuum when it impacts, destroying the explosive particle involves in the same way Thunder disappears.

I don't know what kind of physics would be nice for this. Strong vacuums cause wild movements in the air and would draw in other elements for further explosions.

Being affected by pressure might make interesting patterns @_@

I can't say for sure since I'd have to know how to toy with the physics in the game to see what it would look like.