Warcraft - Lore of the Cards

My brother has had a gaming YouTube channel for a while now, chugging away with not many subscribers and views...
Then recently he started a series called "Lore of the Cards", where he picks out cards from Blizzard's online CCG "Hearthstone" and talks about the lore behind the characters depicted on the cards.  He's a massive Warcraft geek, so it's a pretty sweet series cos he picks some more "unusual" cards to focus on rather than just the big name ones, and I've certainly learnt some stuff from watching it!  
Aaanyhow, all of a sudden with this series thousands of people started watching his videos and hundreds subscribed.  I was really happy for him, so wanted to draw him a piece of art to use as the titlescreen for his videos

This is the result - a collection of some of his favourite lore characters from the Warcraft universe.  Can you name them all?

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