Hard mulligan for any of your transform effects. If you get potion of polymorph don't play until they've either played Barnes or your turn 7 rolls around (that way you almost guarantee that they lose a minion & waste their turn.
Also, never kill Rag. Killing Rag only helps the priest kill you faster & gives them their best target to rez.
If the deck sees some interest I'll expand the guide with details for other match-ups and add pics/flair.