First printed in Alliances (1996)
Artifact
, 
: 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.
- Illustrated by
- Brian Snõddy
Legality
- Not legal in
- Standard, Pioneer, Modern, Pauper, Future Standard, Historic, Timeless, Alchemy, Penny Dreadful, Old School 93/94, Gladiator, Pauper Commander, Tiny Leaders, Brawl, Standard Brawl, Competitive Brawl
Rulings (2)
- If an effect like that of Leyline of the Void prevents cards from being put into your opponent’s graveyard, the process described in the first sentence of Helm of Obedience’s effect will never stop. Your opponent’s entire library will be exiled, even if X is 1.
- You put the creature card onto the battlefield even if you can’t sacrifice Helm of Obedience (because it’s left the battlefield by the time its ability resolves, for example).
Prices
MTGO price: 5.39 TIX, the cheapest non-foil print (average sell price on GoatBots, 1 Nov 2026).
Combos
4 combos, the most popular first:
- Exile target opponent's library: Helm of Obedience + Rest in Peace
- Exile target opponent's library: Dauthi Voidwalker + Helm of Obedience
- Exile target opponent's library: Helm of Obedience + Leyline of the Void
- Draw the game: Helm of Obedience + Wheel of Sun and Moon
