Against faster aggressive matchups that put the Golgari deck on the back foot, Finality is going to provide a fantastic form of card advantage to catch back up on the battlefield
First up is the Golgari Elf Noble: Dealing damage will get you at least two tokens, but if you manage to buff the power youll be rewarded with even more Elf Warriors
Cards like this including Terror of the Peaks and Elesh Norn can have a stifling effect on an opponents ability to play the game
You can't make many planeswalkers into it, a lot of removal is weak against it
The Avenger is also a card I had in my Cube basically from my Cube's inception, and I've only just swapped it out in the past year or so
While I still prefer the other options that I listed, in 4+ color decks, particularly budget decks, I can see running the Caravan too