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The Magical Places promo cards come with a special foil treatment and a Disney castle turret as the rarity icon

Pairing it with something like Font of Agonies turns all that life-payment into a steady stream of removal, and it has a great baseline of doubling up on fetch land activations

If you've had one Human enter the battlefield this turn (including Eowyn herself, on the turn you play her) will reward you with two more Human Knights with Trample and Haste

Partners like Vial Smasher the Fierce and Kodama of the East Tree generate huge value by themselves, so getting multiple copies of them on the battlefield will be a massive threat