The ready effect can be useful but the lore gain is minimal and you also have to consider you need a location in play and to have a character moved there for this to even have a target
Canard's Finest Sapphire & Steel The last duo on this list is Darkwing Duck & Launchpad, a seven-ink card that can be used in your inkwell
Legacy is an utterly huge format, and you can basically see the hallmarks of Legacy Prison in Death and Taxes in the form of mana control (in Thalia, Wasteland, and other cards), but there really isnt much in the way of successful Legacy Prison otherwise
Still, there are some great cards in here, and a few cards to help you get more creatures out like The Five Arrive (a reprint of Genesis Ultimatum), copy them (Quantum Misalignment), remove threats individually (Path to Exile), or wholesale (Cleansing Nova)