Galadriel's Mirror

At the beginning of your upkeep, look at the
top card of target player's library. You may
put that card into that player's graveyard. Whenever a card is put into your opponent's graveyard this way, you lose 2 life.

"Remember that it shows many things, and not
all have yet come to pass. The Mirror is a dangerous guide of deeds." Galadriel