In this person's defense, the deck runs plenty of counters to shut down most people's plays (and to mill at the same time), a lot of the cards in this deck have a CMC of less than 4 (which means fast plays), and the main two creatures in this deck also make you mill. Now granted there are some areas that this deck can improve in but "dead in the water" is kinda harsh to say against something you haven't played against. Even if you've played against mill decks before, all games are different and not all deck themes or styles mean the same end results.
i said it was
dead in the water in a certain matchup, not overall. anything that runs a high number of instant and sorceries such as burn or control or storm is
dead in the water the second
hive mind resolves. the main issue with this is the sideboard. asides from the negates, which in all honesty should be mainboard, there are no answers for anything that causes this deck problems. especially to deal with anything that has already resolved. if the deck creator wants to run mill in modern, the should at least be in blue black if not blue black white. if going blue black the mainboard replacements for other cards that i would recommend are these:
Phenax, God of DeceptionBreaking // EnteringConsuming AberrationMind GrindMirko Vosk, Mind DrinkerMind FuneralIf going blue white black i would take a look at my infinite combo deck:
https://deckstats.net/decks/48557/467084-hedronfall/enI apologize if i am coming off like a dick, but when i was coming up with my mill decklist, i had to take all of this into account as well.