At the end of the previous Stage, the devs would reveal the Maps being played in the upcoming OWL Stage.
However, they would also reveal:
- 1 to 3 Hero Bans, per map
Different bans for each Map.
Every team gets the same bans per map.
Every team has to cobble together some strategy for those map+bans without key heroes.
Teams can plan and practice ahead of time, and form potentially never-before-seen strategies.