Helm of Obedience [Alliances] XY72 Set: New Phyrexia Type: Legendary

Set: New Phyrexia Type: Legendary Creature — Praetor Rarity: Mythic Cost: {5}{B}{B} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp

1 face-up monster your opponent controls loses 1000 ATK

but negate its effects

you can destroy 1 card on your opponent's side of the field

both players reveal their Main Decks

Helm of Obedience [Alliances] XY72 Set: New Phyrexia Type: LegendarySet: Alliances Type: Artifact Rarity: Rare Cost: {4} {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 Helm of Obedience and put one of them onto the battlefield under your control. X can't be 0.