Soul Reave

Whenever a nontoken creature card is put into your graveyard from the battlefield, you may pay {2} and 2 life. If you do, put the top two cards of your library into your graveyard, then return an instant or sorcery card from your graveyard to your hand.
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"The lich use one's soul as currency. To them, you are worth more dead than alive." ~ Trostani