Blazing Skys

{t}: Add {1} to your mana pool. Activate this ability only if you control a basic land.
{t}: Add {r/g}{1} to your mana pool. Activate this ability only if you control three or more basic lands.
{t}: Add {r/g}{r/g}{1} to your mana pool. Activate this ability only if you control five or more basic lands.