
Whenever a creature attacks you or a planeswalker you control, that creature's controller mills two cards.
Riddlekeeper has 2 printings, first in Commander 2011 (2011). EDHREC ranks it #10,645 among Commander cards. It appears most in Bruvac the Grandiloquent decks (2,068 on EDHREC). 2 public decks on TCG run it. It has 1 official ruling.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.