
{X}, {T}: Target opponent mills a card, then repeats this process until a creature card or X cards have been put into their graveyard this way, whichever comes first. If one or more creature cards were put into that graveyard this way, sacrifice this artifact and put one of them onto the battlefield under your control. X can't be 0.
Helm of Obedience has 3 printings, first in Alliances (1996). EDHREC ranks it #12,701 among Commander cards. It appears most in Grand Arbiter Augustin IV decks (746 on EDHREC). It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.