Black Swan, Memokeeper

+1: Scry 1, then draw a card.
-1: Scry 3, then draw 3 cards, then you and target player each discard a card. You have no maximum hand size going forward.
-4: Draw a card from the Major Arcana. Each opponent discards X cards. Scry X then draw X cards. 0-6: 1, 7-13: 2, 14-20: 3, 21: 5