You gain experience as a team from from minions dying , structure kills , champions kills , etc . Every team level , your heroes gain a 4 % I think stat increase , and at 1 , 4 , 7 , 10 , 16 and 20 , your team gains a talent tier , which increase your power significantly . At 10 you choose your ultimate from a selection of 2 , normally and at 20 you gain either an ultimate upgrade or another skill which hold quite immense power might be passive , might be active . One of the things that comes from this is that you don ' t have to lane in the same way as in LoL . Of course a meta is developing , like where to have a solo laner , but not nearly in the same way as LoL e . g . ADCsupp . in bottom . Roaming is therefore really important and effective , since you usually don ' t lose out on experience The talent tier also brings the support role to an pretty equal level to your traditional carries the damage dealers , since you don ' t have to worry about e . g . wards , support specific items or being behind in levels . Instead , your abilities actually gets stronger PIt also means that there ' s a good chance for comebacks , if the team being behind is able to catch up to the same talent tier as the team ahead , which in turn means that the winning team needs to stay focused , and not going into cruise control , in order to close out the game . This , however , can also be quite frustrating from time to time if you are the winning team , lol xDMan , that went on to become a wall of text . Hope I clarified some things , and I welcome you to try out HotS , it ' s really fun ! DEdit Words .