Night Oracle's Offer

Buyback {4} (You may pay an additional {4} as you
cast this spell. If you do, put this card into your hand
as it resolves.)
Each opponent draws a card. Surveil 2, then
draw a card for each opponent that drew a card
this way. (Look at the top two cards of your library,
then put any number of them into your graveyard and
the rest on top of your library in any order.)