How many wins do I need to get from Bronze 4 to Emerald?
64 wins
With a 55% win rate, you need to play 640 games, win 352 of them and lose 288.
With a 60% win rate, you need to play 320 games, win 192 of them and lose 128.
With a 65% win rate, you need to play 213 games, win 138 of them and lose 75.
With a 70% win rate, you need to play 160 games, win 112 of them and lose 48.