Tower of Babel

{w/b}, {t}: Add any combination of any 2 mana,
or create a Treasure token.
{w/b}, Discard this: Create two 1/1 white and
black Spirit creature tokens with flying.
{w/b}{w/b}{w/b}{w/b}, Exile this from your graveyard: Create four 1/1 white and black creature tokens with flying.