Mulligans
Archmage Arugal, Pyros, Shimmering Tempest, Ghastly Conjurer, Bone Drake, Lich King empower your Twilight Drake and Mountain Giant for the hand archetype. Arcane Keysmith can also hit some nice secrets to increase your hand size as well.
Spiteful Summoner is empowered by pyroblast.
Dragon synergies include Faerie Dragon, Scaleworm, Twilight Drake, Bone Drake, and Primordial Drake.
The 1 mana hero power really empowers your favorable trades as well as helping getting the opponent down to below 10 hp for a pyroblast finisher.
Win condition is to have a strong board presence until your opponent is below 10 HP and then to finish them off with a pyroblast.