Because of the event, I decided to start working more on the challenge log entries for Gold Saucer, and this is something I learned that's pretty fast and simply to get 3 Verminion matches in each week. I'm not sure if there is an easier way to do it, but what I figured out is that if you do Verminion Challenge 4, you are fighting a single giant goobbue minion, which is a beast type, so just start spamming a bunch of poppet type minions and he dies pretty fast.