(As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.)

I, II, III - Exile cards from the top of your library until you exile a legendary card. You may play that card for as long a The Day of the Doctor remains on the battlefield. Put the rest of those exiled cards on the bottom of your library in a random order.

IV - Choose up to three Doctors. You may exile all other creatures. If you do, The Day of the Doctor deals 13 damage to you.