Maggots

When a creature you control dies, you may cast
this without paying its mana cost, and as if it had
Flash. If that creature was a token, you may give
this +0/+1.
"Take a close look at any corpses you see, or better yet,
just burn them or crush them to a pulp to be sure that
there aren't any of these insidious maggots writhing
inside."