
Counter target spell.
Investigate three times. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
Confirm Suspicions has 4 printings, first in Shadows over Innistrad (2016). EDHREC ranks it #10,249 among Commander cards. It appears most in Morska, Undersea Sleuth decks (1,942 on EDHREC). 1 public deck on TCG runs it. It has 4 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.