These sorts of Jund decks have been a staple in Standard for years, and its difficult for a deck full of small creatures that need to work together to win to beat a monstrous pile of removal and unbeatable creatures
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
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
However, Grist is also a 1/1 insect creature as long as its not on the battlefield
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