Spun Trees

{t}: Add {g} to your mana pool.
{2}{g}{g}, {t}: Spin the spinwheel.
{5}{g}{g}{g}{g}, {t}: Put a 5/5 green Beast creature token onto the battlefield with trample and "{1},{t}: Spin the spinwheel."
Up at the tops of the acacia trees, there lies spinwheels made of pure wood. Beasts knock it down and play with it to find that it sparks reality.