Assertion: league's team | /r/HasProperty | two damage heroes
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Source sentences:
text: Players select from the game's roster of thirty heroes, split between classes of Damage (the main attackers), Support (providing healing and other buffs), and Tank (shielding teammates with high health amounts) each with their own pre-designed set of weapons and skill kits, though each player on a team must play a unique hero; starting with stage four of the 2019 season, each team must be composed of two Damage heroes, two Supports, and two Tanks.