Magic The Gathering: White Deck Combos (Need istance)?

I think I have the perfect answer for you. G/W Allies. With Harabaz druid you can easily get the mana you need to play Iona quickly and not only that white allies have a lot of options for life gain. Particularly Ondu Cleric and Talus Paladin. I've gotten to a max of 76 life in a game with just simply the ondu cleric so yea it's definitely possible. So yea hope this helps, I gaurentee if you look into this option you will have found just what you are looking for.