champion drop rates in TFT should increase per owned copy

depending on the % increase on a drop rate per copy, obviously some things could be broken. a 50% chance per copy would obviously allow people to spam legionaries, while a 1% per copy would be impossible to notice. at the moment the champions that we start with in the first few turns rarely have any significant impact on the game itself and it is also extremely difficult to reach a full build without "going with the flow" and lucking out. this would also allow an actual meta to form instead of just "oh im going to put all my items on a carry"