For only three more, it reduces the cost of all noncreature spells by one generic mana , and three more after that increases the damage dealt by everything you control by two .
Maybe it betrays the very laws of magic, nature, and, science
Then get a mix of packs from the sets that are in the current Standard rotation: Wilds of Eldraine , The Lost Caverns of Ixalan , Murders at Karlov Manor , Outlaws of Thunder Junction , Bloomburrow , Duskmourn: House of Horror , Foundations , Aetherdrift , Tarkir: Dragonstorm , Final Fantasy , Edge of Eternities , Spider-Man , Avatar: The Last Airbender , Lorwyn Eclipsed , and Teenage Mutant Ninja Turtles
It allows collectors to display boxes without obstruction
Strategically, focusing on one format initially makes sense
For original Theros block, you maintained a flavor balance between familiar and obscure references to Greek mythology