Brainsnail Host

At the end of each turn put a -1/-1 counter on
the enchanted creature. Then for each -1/-1
counter on the creature create a 1/1 black and
green Snail token. If the enchanted creature dies
create a X/X black and green Snail token where
X is equal to the number of -1/-1 counters the
creature had when it died.
Brainsnails crawl into the ears of the unsuspecting
host while he's asleep and lay eggs into the brain.
When the eggs hatch the small snails start eating the
brain of its host and then cr