Fortunately, the official site has a complete deck list for this FFVI deck (as well as the others) that goes through each card by card type
Body Double [Wizard deck]: Always a lot of fun, especially if you shape-shift something strong that one of your opponents has in their graveyard
These are much better for player four than player one, and - crucially - they're fetchable, which puts them a step above many other lands
How would you build these commanders
Legends of Duskmourn: House of Horror Toby, Beastie Befriender Toby had never felt comfortable around other people
As announced, the four commanders are Terra, Cloud, Tidus, and Yshtola, so you can expect decks inspired by Final Fantasy VI , Final Fantasy VII , Final Fantasy X, and Final Fantasy XIV