Luke, Son of Darth Vader

( {p/b} can be paid with either B or 2 life.)
Lifelink
For each {b} in a cost, you may pay 2 life
rather than pay that mana.
Whenever you cast a black spell, put a
+1/+1 counter on Luke, Son of Darth Vader.
"Never! I'll never turn to the dark side.
You've failed, Your Highness. I am a Jedi,
like my father before me." declared Luke.