Moon Knight, Prophet of Konshu

You may pay {2}{b} rather than pay this card's
mana cost. If you do, put Moon Knight on the battlefield as a 2/3 with menace instead.
You may pay {3}{b}{b} rather than pay this card's
mana cost. If you do, put Moon Knight on the battlefield as a 3/4 with lifelink instead.
When Moon Knight enters the battlefield, draw
a card.