Nanjala, Famine Incarnate

When this card enters the battlefield tap all
untapped lands. Lands tapped this way do not
produce mana and do not untap next turn.
{t}{x} tap X lands where X is 1/2 the amount of
mana you paid.
"I can get you out of your contract, but everything comes at a cost." Nanjala Njaa to Arthur King, 6/27/2006