As Dota 2 develops from patch to patch, there is a general strategy that Icefrog employs to balance the game. Highly picked heroes, especially those with good win rates, receive some nerfs to push their popularity lower. Meanwhile, less picked heroes with poor win rates receive buffs to try and equalize their popularity. Because a Dota meta takes a long time to evolve and categorize each hero, there are plenty of opportunities for lesser-picked heroes to be perceived as weak while actually being strong. Over a series of patch cycles, we will often see heroes get incrementally pushed forward by Icefrog, especially if they have been out of the meta for a long time.