I have two combos i really like firstly i have my Green/ White populate deck nothing like seeing your opponents face when you keep spawning 8/8 tokens with vigilance every other turn (depending on the cards drawn/ on the field maybe every turn). And the other deck colors i have is a Black/ Blue deck which is all about the grind milling that being said i once had a 53/53 creature on the field alongside a 23/23 2 manna creature (Wight of precinct six and consuming aberration if you want to know). Atm though im working on boosting the power of my red/ black deck.