Shadowbonder Disciple

At the beginning of each end step, if you control
no shadows, create a 1/1 white and black Shadow creature token. Otherwise, sacrifice a shadow.
Whenever one or more shadows you control
dies, each player loses 1 life and mills 1. If no
land cards are milled this way, you gain 1 life.
{w/b}, Exile Shadowbonder Disciple: Shadows you
control phase out.