Blackwing, The Bat King

Flying, Ward {x}, where X is equal to the number
of Bat creature tokens you control.
Other creatures you control with flying get +1/+0
and have deathtouch.
Whenever you attack, target player mills cards
equal to the number of attacking creatures you
control with flying. Create a 1/1 black Bat
creature token with flying for each creature
card put into a graveyard this way.