Dooku and Asajj

Flying, ward {2}
Whenever Dooku and Asajj attacks, you
may pay {x}{w}{u}{b}. If you do, draw X cards.
At the beginning of each end step, you
may pay 4 life. If you do, create a number
of 1/1 black Sith Forceful creature tokens
with lifelink equal to the number of cards
you've drawn this turn.