Whenever you tap a land for mana, add one mana of any type that land produced.

Mountaincycling {2}, plainscycling {2}

When you cycle Flourishing Landscape, you may pay {G}. If you do, search your library for a Forest card, put it onto the battlefield tapped, then shuffle your library. (Do this before and in addition to searching for the mountain or plains to put into your hand.)