Currently 2 x Wiz and a Priest. IMO race skills is the key to consistent deliverance of good builds and class is a secondary factor. Builds also depend on the kind of items in your inventory.
Elf for drawing movement; Humans for tactical strength; Dwarves to sustain huge damage. Elf warriors use the movement skill mostly. Search the Deck Building forums for Bejeweled Elves. Human skills are very very strong but they are rare to find. Skills like Inspired Command. Dwarf skills that have Toughness or Duck. Raging Battler for trait cycling Dwarf Wizards. You would love the innovation part. The innovation part separates this game from other strategic games and in my opinion is the best game that I have played till date. P.S.: Sort the Deck Building according to most views/replies and you may find very good/niche builds.