Hearthpwn

The basic idea of this deck is to try and get off a large combo resulting in buffing your Attack to insane levels. Savagery is there for large board clear and Ironbeak Owl is to remove some Taunt that might hinder a direct assault to the face.

Your major combo would be Turn 10 Savage Combatant, Garrison Commander and Double Hero Power for 6 Attack hits (8 if you have Justicar Trueheart active).

Force of Nature + Savage Roar is a safety net combo, and also allows you to get more value from cards like Haunted Creeper.

Update 1: King Mukla has been ousted for the likely more consistent Living Roots, which has pretty good Savage Roar and Power of the Wild synergy, along with being a good bit of early game removal. While Mukla is fun, I recognise that this is a Hero Power based deck, not a full on Beast Druid, so he isn't necessary.

Update 2: Following on from some fantastic community feedback, 1 Bite and 1 Druid of the Fang have been removed in favour of another Living Roots and a Blingtron 3000. While Bite does seem to be a fantastic idea in a Savage Druid deck, it pales in comparison to the potential that Blingtron 3000 offers in the weapons it gives - Savagery on a Gorehowl? Don't mind if I do! The Druid of the Fang was swapped for another Living Roots, pushing it more towards a Token Druid style of play than a Beast Druid, which seems to make the most sense with cards like Savage Roar.

Update 3: Aha! With the brand new card drops from today, the last Druid of the Fang has finally been dropped in favour of the much better (and un-Big Game Hunter-able) Knight of the Wild. I think this card is just overall a better addition to the deck, and is more consistent.