
Whenever another creature you control diesdiesA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying., investigateinvestigateCreate a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.". (Create a Clue token. It's an artifact with "
, Sacrifice this token: Draw a card.")
Whenever you sacrifice a token, surveilsurveilLook at the top card of your library. You may put that card into your graveyard. 1. (Look at the top card of your library. You may put that card into your graveyard.)
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.