This is an ideal card for any overaggresive Red
deck that wants to deal damage like crazy. Most
of them don't need lots of land on the table
anyway, so when they have enough, each
additional land they draw becomes ammo for the
Assault. It also makes a nice finisher for any
Red limited deck; after all, any removal is good
removal in Limited.
This card is my SECOND favorite card with a
casting cost of RRR. The number one, of course,
is Ball Lightning. This card is a close second,
though. This card is so good that I can't
believe that two or three years have gone by
since I last played with it. This is much more
of a contructed card, usually a central damage
source in either a land destruction deck (one
which doesn't really need that many lands in
play) or in a deck with NO other way to win
other than Seismic Assault. This card became
even more fun in constructed when Life from the
Loam arrived, a card that lets you bring up to
THREE land cards back from your graveyard to
your hand. The synergy of these two cards
together is just amazing. In limited play,
Seismic Assault is also good times, but much
harder to use for two reasons. The most
difficult part is getting it into play, three
mana of one color is a hard casting cost to
manage in a 40 card deck that might be splashing
a third color. Also, limited decks, especially
booster draft decks, are likely to be as lean on
land as possible, probably needing to play most
of the lands its draws until very late in the
game.