What set is The Helvault Promo Box from?

The Helvault Promo Box is from the Open the Helvault (PHEL) expansion, part of the Magic: The Gathering trading card game.

Where can I buy The Helvault Promo Box?

You can buy The Helvault Promo Box from verified sellers on CardNexus, a marketplace for Magic: The Gathering singles and sealed products. Compare listings by condition and finish, view the price history chart, and choose from multiple sellers to find the best price for this Sealed product.