mtg lord of the rings card list price One Ring - Universes Beyond: The the Rings: Tales of Middle-earth earth%20Set%20Booster%20contains%2012%20Magic%20cards%2C%201%20Art%20Card%2C%20and%201%20token%2Fad%20card%2C%20Helper%20card%2C%20or%20card%20from%20%26ldquo%3BThe%20List%26rdquo%3B%20(a%20special%20card%20from%20Magics%20history%26mdash%3Bfound%20in%2025%25%20of%20packs) Magic Lord of the Rings

That alone makes her an exceptionally steady engine, but her second ability pushes the value even further

The same is also true of any other abilities that modify how a land enters the battlefield or apply "as" a land enters, such as that of Vesuva or Cavern of Souls

Counter target noncreature spell

When they do, they roll the six-sided die to claim the corresponding reward from the rewards card

If a spell or ability lets you specifically cast a creature from a graveyard, you can choose to cast it for its prototype cost

Because Helm of Obediences ability only stops milling once it has either milled X cards or a creature, if you have a replacement effect in play that exiles cards when they go to the graveyard, the Helm never sees either of its conditions met, and it just mills the entire library