First and foremost it scales brilliantly with any graveyard effect cards
7 Snorlax - Jungle Set Snorlax is a fan favorite, but while most players held onto the original base set cards for the large sleep Pokmon, there is value in every version of his card
They need cards so badly that although they know Edric is encouraging them to attack other players to draw draws, they do it anyway
(You descend each time a permanent card is put into your graveyard from anywhere.) Uchbenbak, the Great Mistake Three generic, one blue, one black, Legendary Creature - Skeleton Horror - 6/4 - Uncommon Vigilance, menace Descend 8 Four generic, one blue, one black mana: Return Uchbenbak, the Great Mistake from your graveyard to the battlefield with a finality counter on it
Maze's End Gates are better in Commander with the printing of Baldur's Gate and Gond Gate, but I still think it unlikely that this works outside of Nine-Fingers Keene decks, and honestly, even in those decks
While being gold or having other utility is harder to account for in terms of objective power in your removal spell the frequency such cards get played should be a strong indicator as to the card's worth as a cube inclusion