Drifter
Black’s role in this set seems to mainly be as a support colour, since it has a lot of disparate elements and synergies, and some really powerful removal spells. Thanks to being spread a bit thin, I think it will require support from whatever colour those synergies best fit into – for example, if we look at the second spell per turn mechanic, White has more common payoffs and more Foretell cards as enablers, while Black provides some solid support but isn’t as directly invested. Still, Black’s overall common power level is quite high, and it’s not like you’ll be sad to play its good cards even if you don’t have direct synergy. I suspect drafting Black in pack 1 will be sort of a mixed bag, and then you’ll be able to see what’s open based on what’s wheeling, or you’ll open more direction in the early picks of pack 2, and from there you’ll be able to decide what combination best befits your picks. I think the best combinations for Black are likely to be Green and White, since they have the most direct synergy, but I would never advise people to pigeonhole themselves into certain colour pairs at the start of a format nonetheless – check out my article on signals and staying open for more info!
Black’s commons do present a couple of clear directions to go into outside colour pairs – the first is that I think it has the tools for a fine beatdown deck, incorporating cards like Deathknell Berserker, Infernal Pet, and Karfel Kennel-Master, and using cards like Dogged Pursuit to finish them off. The second is that several of Black’s cards seem to promote a grindy attrition strategy, using cards like Skull Raid, Elderfang Disciple, and Jarl of the Forsaken alongside all the removal it has to grind them to dust. I suspect these won’t be decks unto themselves so much as form a plan that incorporates and builds around the set mechanics though – the former strategy seems like it could fit quite well into an Orzhov second spell deck, and the latter into a Golgari or Dimir snow deck for example.
Oddly enough, a lot of the removal in Black and in the set as large is comprised of cards you’d be happy to have 1-2 copies of, but you don’t really want to load up on, which is a dynamic I kind of like, since it leads to more removal being passed and more decisions to make later in each pack. Overall, I’m pretty excited to draft Black, it seems like it’ll encourage and reward some pretty intricate drafting decisions!