You need to know what's happening around you all the time, also nano boost is something you can get like every 1 minute 30 seconds, even faster if the fight is more intense, so you should not be saving nano for long, I hate it when my team is not being aggressive enough it's like you are a playmaker when you nano someone you are basically telling him to go all out, so when I see that our genji or rein is saving his or her ult when we need it, I just nano them makes them go wild haha, sleep dart and nade management is very important too Cuz they re your lifelines, you need to predict who has ult and save your sleep dart for them and a good anti nade will always result in a team swipe, even better if you have a zarya throw your nade in that grav to cancel the zen on the other team.. Haha now that I think about it Ana players are sadists love to destroy other peoples dream of getting the potg with that sleep dart