Astraea, Infectious Aide

Changeling (This card is every creature type.)
Infect, Flying
Whenever you draw a card, put a +1/+1 counter
on Astraea, Infectious Changeling.
{t}Pay 2 life: Draw a card.
The Infiltrator has developed a fondness for its prey.
If this were to interfere with its mission, the aberration
would be purged. However, it has grown even more motivated to bring its friends to Phyrexia's perfection.