Helm of Obedience [Alliances] Mirrodin Besieged Urza was stunned to find

Urza was stunned to find that common silver passed through the portal undamaged

"All men have their appointed time

they trenched

return it to its owner's hand at the beginning of the next end step

Set: Junior Super Series Type: Land Rare Cost: Whenever City of Brass becomes tapped

Helm of Obedience [Alliances] Mirrodin Besieged Urza was stunned to findSet: Alliances Type: Artifact 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.