When Serene Sleuth enters the battlefield,
investigate (To investigate, create a colorless Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.").
At the beginning of combat on your turn,
investigate (To investigate, create a colorless Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.") for each
goaded (It attacks each combat if able and attacks a player other than you if able.) creature you control. Then each creature you control is no longer
goaded (It attacks each combat if able and attacks a player other than you if able.).