Nick Valentine can't be blocked except by artifact creatures.
Whenever Nick Valentine or another artifact creature you control dies, you may investigate. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
Nick Valentine, Private Eye has 4 listed printings; the most valuable is the Surge Foil printing from PIP at US$3.55 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
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