Beastial Manifestation

Enchant creature with total power and toughness
less than or equal to 3.
When this Aura enters the battlefield, tap
enchanted creature. As long as its enchanted
with this Aura, it can't untap. Then create a
token that's a copy of enchanted creature, except
it's a 7/7 blue Illusion with "When this creature becomes the target of a spell, draw a card, then sacrifice it."