Lopsided Deal

Create a Treasure token, then you gain 3 life.
Bargain (Choose an opponent. That player looks at
the top two cards of your library, then sets one card in
a facedown pile and the other in a faceup pile. Choose
a pile to put in your hand and put the other pile into
your graveyard. Repeat this process, reversing each
player's roles.)
No matter how you barter with a hag, they always
seem to come out ahead.