---
name: "Helm of Obedience"
mana_cost: "{4}"
cmc: 4
type_line: "Artifact"
colors: []
color_identity: []
keywords: ["Mill"]
set: "PRM"
set_name: "Magic Online Promos"
collector_number: "65642"
rarity: "rare"
artist: "Brian Snõddy"
oracle_id: "16cadebf-c484-41f8-9e38-5c2c528f5b54"
canonical_url: "https://avascry.com/printing/helm-of-obedience-prm"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Helm of Obedience
- **Mana Cost:** `{4}` (CMC: 4)
- **Type:** Artifact
- **Keywords:** Mill

## Oracle Text
{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.

## Top 4096-Dim Neural Synergies
1. [Millstone](/printing/millstone-m19.md) — Artifact
2. [Sands of Delirium](/printing/sands-of-delirium-m13.md) — Artifact
3. [Hypnotic Swirly Disc](/printing/hypnotic-swirly-disc-ust.md) — Artifact — Contraption
4. [Shriekhorn](/printing/shriekhorn-mbs.md) — Artifact
5. [Grinding Station](/printing/grinding-station-5dn.md) — Artifact
6. [Keening Stone](/printing/keening-stone-c16.md) — Artifact

## Printing Details
- **Set:** Magic Online Promos (PRM) #65642
- **Rarity:** Rare
- **Artist:** Brian Snõddy
- **Total Printings:** 3 across all historical editions

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `not_legal` | Pioneer: `not_legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `not_legal` | Penny: `not_legal`

## Official Rulings
- *(2008-10-01)* 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.
- *(2008-10-01)* 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).