Not much to say, I like it. The way to get the mob is cool. The only thing to be optimized would be that the ride feels a bit out of round, which is probably due to the update rate.
The earth mobs are meant as an barrier for the "the ground is the limit" part. However it was planed to add a drop from the air mobs that cancels any earth attack. There was just not enought time to get it finished. (mostly because I tested in a flat world and wondert why it wouldn't work on normal terrain.... cave air -.-' )
Therefor it will be added when I have some more time.
