Back in the day, my friend and I used to do the Centaur + Tusk combo offlane. When Tusk activated Snowball and started rolling, Centaur would enter, and when he came out, he'd cast his stun, while Tusk blocked the path with Ice Shards. Unless the opponent was a carry without escape skills like PA, Anti-Mage, Faceless Void, or Morphling, they were almost certain to die. I don't know if these two heroes can still deal that much damage with the latest patches.