[Oh, Riku figures that if Armstrong's got a Scizor, it's probably one of Blade's eggs. And seeing the result gets a smirk outta him.]

Shaking the ground, huh? Sounds like Tyranitar might be up your alley. It learns Sandstorm and Earthquake, not to mention some rock type moves. Best of all? I've got one Larvitar egg up for grabs.