Ive played against it a couple of times in Brawl on MTG Arena, and if you cant deal with Narset before it attacks, it's pretty much game over due to its ability that lets it target non-creature spells from any graveyard, exile them, and cast a copy for free
(704.5b) You could hit up an all-you-can-eat poison counter buffet no problem
There are no Floodborn in this deck, which is a bit odd for the Rise of the Floodborn expansion
War of the Spark had flooded Standard with dominant three- and four-drop Planeswalkers, later topped off with the two-drop Wrenn and Six in Modern Horizons
He also makes it so that if you control three or more wolves or werewolves at the beginning of your upkeep, it becomes night and you can transform any number of human werewolves you control
He capitalizes on tables that rely on multiple spells each turn, which makes him effective against control and combo-heavy opponents