pretZ

joraga wallcaller essential for this deck if you can put it in

deadeye navigator and palinchron is a good combo though it is a bit high in cmc
but with the bit of ramp in the deck already it wouldnt be to difficult to get out sooner
this is the link to my infinite mana deck if you want to have a look at some other combos http://www.mtgvault.com/pretz/decks/edh-mill-counter/
its very hard to get infinite coloured mana for low cmc

have you looked at using fire servant

base around heralds of war to play it early and put counters on it