Mikar, the Magnanimous

Each creature you control and each creature card you own that isn't on the battlefield is all creature types and all colors.
At the beginning of your end step, you may tap five untapped nontoken creatures you control. If you do, draw five cards.
Tap two other untapped creatures you control: Mikar becomes a colorless land with "{t}: Add one mana of any color" until end of turn.