Lord of Rotting Scales

Other skeletons and zombies you control get +1/+1 and gain flying.
{2}{b}{b}{b}, Exile this card and all other creatures from your graveyard: Create an X/X black Dracolich creature token with flying and "This creature's power and toughness are each equal to the number of creatures you own in exile."
"In death, all is equal. If one can fly, all can."