a lot of dota2 builds require very intentional use of very small advantages with narrow timings. you'll see pros go in for a 1v1 kill the moment they hit level

a lot of dota2 builds require very intentional use of very small advantages with narrow timings. you'll see pros go in for a 1v1 kill the moment they hit level 5 and come out the other end with barely any HP, but that HP will be due to a minor totem they bought or a bottle sip in between hits or something