The Shepherd

Whenever you cast a creature spell or gain life,
create a 1/2 white Sheep creature token with
Haste and "Sacrifice this permanent: create a 2/2
Wolf Creature token with Haste and
'{t}, Sacrifice target non-wolf token permanent:
put a +1/+1 counter on this creature and create a
food token'"
The Shepherd gets +1/+1 for each Sheep you
control