The value of Secret Lairs from a players' perspective mostly comes from the fact that they have cool new art, but Secret Lairs offer less value if all you care about is having some version of a card to play with
A resolved Morphling would win the game in any format, including Vintage
Whenever you cast a spell, choose up to one Return target spell you don't control to its owner's hand
Cards like Lilo, Making a Wish and Stitch, New Dog were just two of the many cheap threats packed into the amber/x aggro shell, with the purpose of getting characters into play as fast as possible, and then using some number of Lanterns or shifting using Stitch, New Dog to get Stitch, Rock Star into play ahead of curve
Some Magic players may think its blasphemy to write this down, but this game we love has always had a pay-to-win element thats hard to escape
Instant-Win Cards The most important part of a Nadu Commander deck is the way to win the game