If you feel brave enough to splash in a couple Blue mana sources you could include
Sage of Hours for an infinite turn combo with your
Hardened Scales, Mikeaus the Lunarch and
Gavony Township; you'd need 2 Scales with only one of each of the other components to set it off.
Also you may want to consider
Solidarity of Heroes, works wonders in +1/+1 counter decks.