Interesting design. Probably doesn't need the "doesn't untap" on the second ability, because it's only adding 1 mana (costs 1, tap this land as well, gives 2) and it's got a specific mana requirement. The colours seem imbalanced though: I'd probably be inclined to make the cycle ",: Add " or ",: Add ", and so on: if you pay colour X, then you either get both ally colours of X, or both enemy colours of X. At the moment this is one of each.