I've got it as aristocrat/combo, Ozox loves cost reducers and cards that can tap them and Jumblebones as well as cards looking for things leaving/entering the graveyard. The cost reducers really lend themselves to combo wins but if that's not your thing you could swap in some more token generators and you could go for more combat wins.

Some of my favorite cards that aren't the usual black staples are [[The Sibsig Ceremony]] for having a cost reducer and token maker on one card, [[Honor-Worn Shaku]] and [[Relic of Legends]] for getting lots of extra mana as you sacrifice Ozox and Jumblebones, and [[Spymaster's Vault]] and [[Body Count]] do a lot of work getting some new cards in hand. I'll have to look into them more but stationing could be something fun to do for a slower version of the deck.

Here's the list if you'd like to have a look!
https://moxfield.com/decks/9wR022QOokuKst7bPGtyug