Black is actually pretty good at using artifacts, and Marionette Master is a hell of a finisher
This spell will be dictating the flow of Standard for the entire time its legal
Enchantments can have static effects, triggered abilities, or even activated abilities, while sorceries simply do what they say on the card, like Strangle deals 3 damage to target creature or planeswalker, and then go to the graveyard
Most uncommons will also end up in the bulk pile, although chase uncommons (generally uncommons worth more than $0.25) that can be sold or traded away individually will be calculated separately
Feed the Swarm One of the biggest shifts in Magics color pie over the last few years has been blacks newfound ability to handle enchantments, and Feed the Swarm remains the standard-bearer for this utility
What the deck unfortunately lacks outside of its fun playstyle is a decent late game and win conditions, as while you can build energy consistently, there aren't many places to spend it aside from continuing to ramp up your existing board in the late game