It was only available inside the very limited January 2013 issue of V-Jump magazine (Magazine NOT INCLUDED) in November, 2012
Zombie Tribal Lord effects / buffs: 15 cards Lord of the Accursed by paying , also gives all Zombies Menace until end of turn, Death Baron also grants Deathtouch, Gleaming Overseer is a Zombie token Lord granting Hexproof and Menace, Zombie Master grants our Zombies with : Regenerate this permanent and Swampwalk, Lost Monarch of Ifnir grants Afflict 3, Ratadrabik of Urborg grants Vigilance, Undead Warchief grants +2/+1 and reduces the casting cost of Zombie spells by , Hordewing Skaab grants Flying, On Wings of Gold grants +1/+1 and Flying, and Necromancers Covenant grants Lifelink
Soul Foundry expanded upon Volrath's Laboratory, allowing you more input into what creature token you're making (giving you more choices than just the token's color and creature type)
Unfortunately, my son decided he didnt like it
Those later cards are the shadowed Unlimited prints
