Seismic Attack

Create X 12/12 Elementals with {t}Add 2
mana of any color
Land Destruction-Exile all lands used to
cast this spell. You get an emblem with
"You may cast lands from graveyard and
exile"
Flashback {x}{b}{b}{g}{g}{r}{r}{u}{u}{w}{w}{b/g}{b/r}