I’m not sure why players have an obsession with getting the boss on Heroes of the Storm, but it certainly exists.
The boss is the toughest mercenary camp on any of the levels that its on, and defeating the boss will convince him to join your fight and attack the other users core. Each mercenary camp has a set lane, and the boss, once defeated and claimed, will start marching his way down towards the core.
The boss is something that has to be dealt with almost immediately, so it serves as a good distraction for the enemy team. Unfortunately sometimes your plan goes wrong. Falstad, being a high mobility character, wasn’t going to have anything to do with the other team getting a boss.
Take a look at the video below.