Sorin's Crusade

Stand Alone (There can only be one Crusade enchantment on the battlefield. When a new Crusade enchantment enters the battlefield, sacrifice this enchantment.)
You may put this card from your hand onto the battlefield instead of playing a land.
Whenever you cast a Sorin planeswalker spell, create X black 1/1 Vampire creature tokens with lifelink and each opponent loses X life where X is that spell's converted mana cost.