Yuu and Mika

(Vampire Knight Sphinx)

Flying, ward 2

Whenever Yuu and Mika 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 Vampire Knight creature tokens with lifelink equal to the number of cards you've drawn this turn.