( war is no small thing, but she says it all so casually he can't help but raise an eyebrow. giant warriors from space. to him, it's something outlandish, but. when you grow up with that as your normal, it really doesn't change much of anything, does it?

he rubs the edge of his bowl, swiping an errant bit of sauce with his thumb. )

Ah, there's only four. Air, earth, water, fire. Metalbending is a... mastery subset skill of earthbending. About one in a hundred or so have the potential. Like how firebenders can generate lightning, or waterbenders can heal.