Dora, Kingdom of the Future

{t}: Add {w} to your mana pool.
{t}: Add {w}{w} to your mana pool if you control
one more Kingdom Land.
{t}: Add {w}{w}{w} to your mana pool if you control two or more Kingdom Lands.
As long as you control two or more Kingdom Lands, Dora, Kingdom of the Future is a 6/6 white creature with vigilance in addition to its other card types.