As soon as the zombies began getting closer to the entrance, I was able to see first-hand what each of my different magical Minions did.
The first Minion I got to get a look at was the: Scout Minion (Water Magic - Arctic Wind).
From what I could see, it produced wind with shards of water and ice in between. It wasn't a very physically strong attack but I could tell that it significantly impacted the movement of the zombies. It managed to mess with the vision of the zombies, causing them to slow down, especially the crawling ones.
Shards of ice would stick into their eyes, completely blocking their vision, the cold wind also slow their speed down as they tried to push through the force.
The next Minion I got to see was the: Scout Minion (Wind Magic - Defensive Wind).