These special lands will appear in roughly 1 out of every 4 booster packs, not nearly as common as the lands found in Battle for Zendikar a couple years ago
Uninkable and unsingable but gaining lore is never a bad thing at any point in the game
White Path to Exile Celestial Flare Runed Halo Elesh Norn, Grand Cenobite Wrath of God Honorable mention: Lingering Souls It's a trap!: Ghostly Prison (Fine against swarm aggro
But despite the emphasis on spells costing four mana or more, I think that the most aggressive versions of UR are the most powerful ones, especially if youre not splashing in other colors
Enchanted Rares The extremely rare Enchanted cards are decorated with feature alternative artwork and ink wash foil treatment
If I did have to pick a recent set to compare it to, Id probably say Lost Caverns of Ixalan , with the tendency for aggro decks to pivot towards indirect damage in the lategame, and the powerful lategame in various colors and flavors