Whenever one or more creatures you control deal combat damage to a player, investigate (To investigate, create a colorless Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.").
, Exile a creature card from your graveyard: Investigate (To investigate, create a colorless Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card."). You gain 2 life.
Vintage
Standard
, Sacrifice this artifact: Draw a card.")
, Exile a creature card from your graveyard: 