
Flying
When this creature enters, investigate X times, where X is the number of opponents you have. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
Whenever you draw your second card each turn, create a 1/1 white Spirit creature token with flying.
Ethereal Investigator has 4 printings, first in Crimson Vow Commander (2021). EDHREC ranks it #4,212 among Commander cards. It appears most in Morska, Undersea Sleuth decks (5,229 on EDHREC). 2 public decks on TCG run it.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.