I've tried mage and priest several times but they all failed.
I guess this Druid deck is pretty straight forward and easy to handle the match comparing with them.
- Get rid of his debuff cards in order of bronze>blue>black>red>green
- If you got a chance to get his dragon, Chromatic Dragonkin by Sylvanas Windrunner, Chromaggus would raise your dragon using his spells.
- Protect your Alarm-o-Bot with completely clearing his boards or with your taunt minion in the mid game.