{R} Elenda and Azor (Extended Art) [March of the Machine Commander][MOC 090]

Flying, ward {2}
Whenever Elenda and Azor attacks, you may pay . 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.