What's not to love about Nova? She is such a threat when used correctly and built properly. When using Nova, you have to understand that you don't stay in a single lane for more than 30 seconds, you hit someone, you leave your decoy, you get out. At level 7, a lot of players will choose anti-armor shells, but by the time you get that second auto attack off, you could've dealt a lot more damage by using one in the chamber instead. Triple Tap is key when an enemy hero is attempting to get away with less than half health, so make sure you're quick in targeting those. When it comes to using her decoy, try to place her in front of an enemy hero while it's trying to get away. It causes somewhat of a body block, allowing you to get a second or two so you can calmly get the next ability off to get that extra damage and if lucky, kill.