Uncivil Unrest also gives all your nontoken creatures Riot, meaning they enter with a +1 Counter or haste, either one of these are great options for a deck that is built around attacking your opponents and having +1 Counters on your creatures
I also want to point out something important: this spell is an instant , as opposed to most red damage based wipes
If it changes zones, it will either cease to exist (if it's a token) or cease to be a copy (if it's a nontoken permanent), and so you won't be able to cast it as an Adventure
This deck was packed with a lot of impressive new cards, as well as the return of some from Chapter One with Prince Eric, Lilo, and the action card Freeze, which was a surprise
This works multiple times over turns, like swinging over and over again, and then really plays well in extra attack decks with things like Aggravated Assault