Eloise, Nephalia Sleuth {3}{U}{B}
Legendary Creature — Human Rogue
Whenever another creature you control dies, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
Whenever you sacrifice a token, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
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