Here is a quick look at the IEM Katowice picks and bans. 25 games were played, for a total of 40 differents champions. The tournament was played on patch 6.3.
Stats are from www.gamesoflegends.com
Picks & bans list :
You can see a sortable list here: Sortable list
Picks by position:
|Bans||Champion (Top 25)|