While only affecting a single creature type restricts Cavern, typal decks can leverage this to ensure their threats get through countermagic, be they efficient merfolk, monstrous dinosaurs, or sneaky goblins
(2016-08-23) A conspiracy's static and triggered abilities function as long as that conspiracy is face-up in the command zone
It would overwhelm a board in not too long and had some nice protection against edicts
And a box can be as basic as a piece of packaging that came with some other order: four sides and a lid will keep your cards in order just as well as a golden chest
While it is no doubt extremely difficult to remove enchantments in red, it is not impossible
Given these measurements, obviously regular card sleeves would not work, but larger card sleeves would