mumu brave

Checked. The Nunus are made to fight alone: in the game's own data a Nunu Brave, Lookout or Vine Warrior never comes to help another Nunu, even standing right next to it. The only ones that help them are the Nunu Farmers, when a farmer's aggro circle touches the Nunu you attack. The Mist Mane lycans living in the village do not help them either. This is how the official game data is set, so we left it as it is.