They are designed to securely fit items that are precisely 3" x 5" in size
In turn, because you have activated a Labrynth card this turn, you can then immediately Special summon Lady Labrynth without paying a summoning cost
At the same time Wizards has introduced three additional card treatments to the Standard booster mix: Showcase frames: These are brand new to Magic: The Gathering, and are stylistically specific to each set, relatively sparsely used, with two mythics and five rares in Throne of Eldraine
One thing is for sure, it's going to be a lot cheaper buying these cards now instead of hoping to pull something from a Booster Box
Multiple hourglasses can be used to reduce the waiting time further, but once a pack is opened, it will go back to 12 hours
Knight line that pivots through Masquerade, or a way to make D/D/D Deviser King Deus Machinex by way of the K9s and D/D/D Marksman King Tell, which is crippling against exactly Maliss