Basically the way it works, as is printed on the card, is that you can cast it when you declare your attackers, turn your attacking creatures face-down and then shuffle them around
Best Lorcana steel cards Beast, Hardheaded Mickey Mouse, Musketeer Captain Hook, Forceful Duelist Maui, Demigod Simba, Rightful Heir Hans, Thirteenth in Line Tinker Bell, Giant Fairy Steel cards power means that they can typically cost more of your inkwell to get out, resulting in a slower route to victory than faster ink colours such as ruby
Fracturing Gust is my other Wishable answer
The most important distinction though is that this Prison deck is proactive about its lock out, while Lantern Control waits to mill relevant cards off the top of the opponent's deck before they draw them
A great upgrade philosophy for any pre-con focuses on three key areas: the mana base, card draw, and interaction