Can people please rate my pokemon black team?

Your natures could use some work; for example, your Garchomp should have an Adament nature. Good call with Togekiss. Your upcoming Breloom should have Focus Punch which would make it an excellent SporePuncher (first round use spore, second/third rounds Focus Punch). It doesn't need Bullet Seed as there are a lot of pokemon who resist grass type moves. Everything else looks pretty good.