Brainstorm plays a crucial role in these decks, allowing you to manipulate your library alongside the search effects from fetch lands
The Banner, in particular, could be surprisingly sought after thanks to all the new Typal synergies releasing in Lorwyn Eclipsed
You draw X cards and then if you spent 10 or more, you shuffle your library and graveyard and draw from it, then untap five lands and have no max hand size for the game
There were only two downsides Seismitoad had: First, the damage output was not very high, so it took time to KO an opponents Pokmon and, second, the fact that Virizion Genesect was one of the most powerful decks in Standard
Its a little finicky since it doesnt do much without landfall, and your opponent needs to control a creature