The way I envision this is for randomly sized chunks of burning netherrack to spawn at max height "fall" to the earth at a diagonal. Once the netherrack contacts a solid block it would cause a lightening strike on the contacted block. Possible additional options would be to have blocks at the edge of the explosion turn to coal, redstone or diamond ore depending on block struck. I would also like to see a configuration file to limit/change the max "meteor" diameter as well as the % chance of a meteor shower occurrence. Command integration would allow Admin to create showers for RP events.