Entomophobia

Entomophobia cost {1} more to cast for each
creature with a base power and toughness of 1 controlled by an opponent.
Enchanted creature can't block or be blocked by
a creature with a base power and toughness of 1.
Enchanted creature gets +X/+X, where X is
equal to the number of creatures with a base
power and toughness of 1 controlled by an
opponent.