This card represents the true genesis of the TCG
The card reads: Whenever an opponent casts a spell, you may draw a card unless that player pays one mana. This leads to a lot of extra cards, but it results in whoever plays it having to constantly ask if people will be paying one mana to stop them from drawing a card
That said, getting a card back whenever you cast a creature is a huge bonus, especially in decks with cheap creatures like elves or humans, and thats why youll play Vanquisher's Banner
No matter what you name, you're always fueling Uro, Titan of Nature's Wrath
Not only can this Shadowmoor enchantment draw you a boatload of cards, but itll help you drag your opponents hands down in the process
At first glance, this seems to be a bit of a mistake, since Umbra Mystic only cares about permanents you control with Auras on them