all card types in mtg Typal Through the Years, Part 2 Every Foil Type in Magic:

FINAL FANTASY VI specifically paved the way for us to understand how to adapt those classic titles

The only other zombie arts to be printed more than twice overall are the above mentioned M10 Bud Cook token and Craig J Spearing's zombie from the second block to take place in Innistrad (more on that one later)

For the rest I'd recommend more tutors to find Jeskai Ascendancy like Enlightened Tutor and Idyllic Tutor, some good recursion like Underworld Breach, and better mana-fixing like shocks / ABU / fetches

The best thing about Commander is that there are so many cards to choose from

Three mana to cast Varragoth, 2 mana for each boast activation to put your combo pieces on the top of your library, and then Sickening Dreams to deal a ton of damage to a player or creature (probably a player)