Hearthstone

Seems good. It'll compete with some 2-drops for sure.

Edit: I can see it going in a control paladin deck as it has some synergy with equality but it does suck that it can whiff and hit hero. It does trade decently against minibot, especially if battlecry procs the divine shield. I can see this used against a heavy paladin meta for that reason. It will be tough to squeeze in but has a place imo.

I dropped like $120 on GvG (did the $90 Amazon deal) but I'm not sure yet if I'll drop any cash on this one. Primary reason is having 4k gold and 4k dust sitting atm. If it was a $25 deal I would for sure but expecting $50 is greedy.

Savage Combatant seems nice but requires a whole new style of Druid deck. Like a Beast/Hero Atk deck. It's only good if you can make use of the Inspire effect otherwise it's equivalent to Lost Tallstrider (5/4 Beast for 4). I still doubt there will be enough tools to make a legit Druid Beast deck. 5 Attack is always nice but again, Lost Tallstrider never sees play and for this card to be any use you do need to wait for turn 6 most likely.

The mech card is meh. There are some 5/5 Mech class cards already which have seen some play but the problem is they are for Warrior/Priest. Shaman, would rather play Fel Reaver for 5 than this card. I can see Mage squeezing this card in to follow Blastmage. It's going to make Mech mage so much beefier.

Only way Savage Combatant works is a new archtype, it's terrible for the current ramp & combo druids. Ramp wants bigger minions and this card doesn't help combo druids.

Savagery could work in a deck with this card. It only damages minions though, but could help with board control making for a very strong control druid deck. Druids tend to lack board clears. Swipe is the only decent card. This card can be used with Savagery to allow for 6 combined damage on 7 mana the turn he's played. (Combatant + Hero Power + Savagery). And the 6 damage can be split 2 ways for even more control. Kill 2 minions and leave a 5/4 body, not too bad.

Edit: Maths are hard

He trades poorly with shredder actually since you can't hero power on turn 4 and shredder will leave a body. Waiting until 6 mana to trade with shredder doesn't mean much since you could play any number of 6 drops that would be better. Only chance it's favorable is if you get him out and let him stick, which is risky.

Ideally you combo him with Savagery or Claw later on at 7+ Mana to take back the board. He's a good comeback card imo.