All provide a slew of rewards, except one
Decree of Justice helped to make Mono-White Control a winner when it was printed, which I played heavily and even wrote a primer on it here ( You can wait until EOT, tap out and cycle for a ton of 1/1 and then you drew a card and it was hard to answer since you cannot counter a cycle since it wasn't cast
Its a useful card that will likely see a good amount of play this season, but the value comes from the unique aesthetic and the fact that Lacey is featured
Yes, it lets you search out a basic land every time you attack (which is twice every turn for Karlach), but it also removes lands from your deck, making it more likely to draw cards that will have a greater impact on the game later on
Legendary Vehicles, alongside the new Legendary Spacecraft card type, are now legal Commanders
Geralf's Messenger and Hancock, Ghoulish Mayor have extra text beyond undying, but even Butcher Ghoul will do if undying loops are your primary gameplan