Inspired by the "cast X spells of Y colour" quests in Arena, I try to keep one mono-coloured deck of each colour that I enjoy. My mono-Black deck has easily become my favourite, maybe even favourite deck that I have haha.
4 Drill Bit (RNA) 73
4 Kitesail Freebooter (XLN) 110
2 Dead Weight (GRN) 67
4 Diregraf Ghoul (M19) 92
4 Grasping Scoundrel (RIX) 74
4 Gutterbones (RNA) 76
3 Pilfering Imp (GRN) 81
3 Cast Down (DAR) 81
4 Burglar Rat (GRN) 64
4 Moment of Craving (RIX) 79
2 Vraska's Contempt (XLN) 129
17 Swamp (XLN) 268
3 Costly Plunder (XLN) 96
2 Divest (DAR) 87
There is something special about turn 1 creature into turn 2 Drill Bit + Drill Bit :)
Overall plan is to take relevant cards often and plant a few creatures that will, turn by turn, chip away. Eventually, you are both top-decking but ideally you can loop the Gutterbones out of the grave later on. Maybe the Reassembling Skeleton has a place just for pure grindiness.
I'm certain it can be improved. This is geared for Best of 1 if you couldn't tell from 17 lands. Ran with 18 for a bit and I felt compelled to drop another. I would honestly be tempted by 16 lands but I think that's probably a mistake. 18 might be right and maybe go down a Moment of Craving.
Anyway, I've had fun with it and have had pretty reasonable success just jamming games in the unranked coin-queues; getting any quests around attacking / Black spells.
If anyone has thoughts on improvements, I would love to hear them :)
Better view:
http://tappedout.net/mtg-decks/monoblack-bits/
PS: Friends don't let friends play with Basics they didn't choose:
https://aetherhub.com/Article/Here-is-how-you-change-basic-land-art-in-MTG-Arena (arena reference guide to picking your Basic lands)