Hearthpwn

1. Dr Boom its the neutral that chokes the 7 slot plays stronger than most legendary cards above its mana cost and has a chance to do 15 damage in a turn with full 4 damage boom bot hits. It is a card that can be played in any deck of any archetype and as a neutral that shouldn't be the case. In the spirit of mad bombers Dr. Boom's boom bot's should read as Deathrattle deal 1-4 damage to ANY character. By not directly nerfing his stats of being a 9/9 for 7 he is still playable but has the potential drawback normally associated with cards that punch above their weight class.

TL:DR Dr. Boom should be the maddest bomber and only change being his boom bots deathrattle can hit ANY character. 

2.  Savage roar. If for no reason than have you ever run into a druid who's win condition wasn't savage roar + Tree ppl? In casual you might see the occasional odd bird but its a combo that is so good that the class cannot function competitively without it. So while it should be nerfed the change would have to be subtle enough to afford it still be viable. 

3. Mylittlepony Challenger In the mirror match its who drops it first... if its any other match up its praying to RNGesus that you get some way to handle a turn 6 or 5 with coin plus whatever is coming down the pipe next. I like the idea and I see a lot of hate about the card that isn't fair it was a new archetype but it also was the monster they couldn't stop once they unleashed it. Try to remember that it took several months to actually see challenger as a mainstream deck so I don't blame any devs for not being able to predict the amalgamation it has become. It should be a legendary... Eadric is underwhelming at best so just make Challenger a legend and get ready to see the challenged reno deck.