I played a game on Braxis Holdout with Rexxar on my team. He would be across the map and I could hear his voice lines when issuing commands like “Misha Charge!” This doesn’t happen with other heroes, so I assume it is a bug.
I forgot what map I was on (I think Sky Temple or Battlefield of Eternity) but I heard Unleash The Boars being cast across the map. I heard Rexxar saying “Track them down!” and I thought a boar was charging at me but realized a team fight was happening at bottom lane while I was soaking top lane.
I love rexar 
he da beast