It is very unfortunate that all those themable, interesting creatures and combinations are not in the least necessary for anything in this game. You can even outgrow the computer by just casting tons of portal growths and an occasional repair or two. The most effective decks I have seen so far are Peasant/Kami and Siege engine decks, none of which require any tactical play. But the fact I have found out and tried that still means: great game :-)
 "GrindQuest"){kind=icon}
 "Cardian"){kind=icon}
 "Book of Mages: The Chaotic Period"){kind=icon}