Light of the Moon

Whenever you play an instant or sorcery spell,
draw a card and you gain 1 life.
Whenever a Human Werewolf creature is cast, transform it. It cannot be transformed again as
long as this enchantment is in play.
{3}{w}, Sacrifice this card: Counter target instant
or sorcery spell.
The moon's light is loved by all except the werewolves.