The only reason Zulaport Cutthroat beat out Blood Artist is that it is a 1/1 rather than a 0/1, and has three creature types that can all work well in black Commander decks, over Blood Artist's lone Vampire typing
This land is effectively Nythos, Shrine to Nyx but instead of pulling from your devotion, it is based on the number of creatures you control of the chosen type
Red decks are good at creating explosive turns, securing an early advantage, and just generally controlling the pace of the game through disruption, constant pressure, and a bit of calculated chaos
However, Grist is also a 1/1 insect creature as long as its not on the battlefield
Before, in formats like Modern, while the removal was good, you could play around it or attack from an angle that was less susceptible to it
Each time you draw a card, you put a loyalty counter on it, and the tokens Teferi creates also get +1/+1 counters