The Grey Ladies

You may pay {p/w}{w/b}{p/b} to untap The Grey Ladies at
the end of each combat phase.

Whenever The Grey Ladies attack, if they are
attacking alone and it is the first combat phase of the
turn, there is an additional combat phase.

Whenever The Grey Ladies attack, if they are
attacking alone and it is the second combat phase of
the turn, there is an additional combat phase.