Secondly, Heroes lacks two things from the perspective of WCG requirements – balance in card distribution and the speed of gameplay. Both of these factors are resolved, the first by using a mirror match format, and the second by controlling the time and structuring the template. For example, in blitz control (600+300), a match takes about 3 hours, which is very little, and even more liberal time controls can be used without the risk of not fitting into the schedule.