Dr. Martin Brenner

When Dr. Martin Brenner enters and at the
beginning of your upkeep, surveil 1.

Whenever one or more cards are put into your
graveyard from your library, investigate. (Create a
Clue token. It's an artifact with "{2}, Sacrifice this
token: Draw a card.")

{2}, Sacrifice a Clue: Return this card from your
graveyard to your hand.