
Look at the top card of target player's library. You may put that card into their graveyard.
Eye Spy has 2 printings, first in Portal Second Age (1998). EDHREC ranks it #27,735 among Commander cards. It appears most in Lu Su, Wu Advisor decks (2 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.