If I start a new clan that has over a million influence, will I be able to participate in a clan war and if so will I get the 5 billion rss for winning or will it be less.
It needs to be over 5m influence and created well in advance of when clan battle is announced. The lower the clan influence, the lower the league you will be in. You won't get 5b unless you are in league of conquerors (4th highest). If you are in league of rookies (the lowest), I'm not sure what you get - maybe 50-100m?