Farseer Nobundo

With the release of Season 9, Hearthstone Battlegrounds is adding three new heroes to the game: Farseer Nobundo with his spell-copying powers, Zerek, Master Cloner with the ability to create an exact copy of a friendly minion, and Exarch Othaar with his discounted spells.

There are various characters who have been important to Warcraft as a whole, and World of Warcraft in particular, that we haven't seen for a while.