Well we’ve made it to the end of U.A.s and we’re ending on a trap card (again). But this is actually a 2 effect, continuous trap that is actually quite good in U.A. so let’s get a look at it.
At the start of the Damage Step, if your “U.A.” monster battles an opponent’s monster: You can banish that opponent’s monster until your opponent’s 2nd End Phase. You can only use this effect of “U.A. Penalty Box” once per turn. You can banish this card from your Graveyard; add 1 “U.A.” Spell Card from your Deck to your hand
So the first effect is a troll-y temporary removal option. Use this effect to dump materials off an Xyz monster, get around things you couldn’t have otherwise, reset stats on enemies with enhanced numbers, separate them from equips, there are several situations where you can find a good use for this card. Utopia Lightning, anyone?
I’ve used it to stall for time when the only monster on my field was Midfielder (sans Stadium). And you can use the banish effect every turn. So your opponent’s monsters are coming back sequentially and you can either deal with them on the way in or just attack them again and keep them out.
The secondary effect is also solid. When this card is in the graveyard you can banish it to search 1 U.A. spell from your deck and add it to your hand. We can all acknowledge that you want Midfielder early on. So you have 3 of him. You have 2-3 Signing Deals, you have RotA, and you had this card at two or three. However, we now also have Foolish Burial of Belongings. So if all of these cards are at 3 (with the exception of RotA) that makes 10 cards that can get you to Midfielder in the same turn. If you had a way to pitch Penalty Box from hand – it would be 13. So we have 25-30% of your deck capable of going into a major piece.
But its just a spell, this Foolish BoB can turn this card into Terraforming. This can could grab turnover for a total scramble, a Powered Jersey for a big play. Penalty Box with Foolish BoB absolutely puts your team on the power play.
But that utility search shouldn’t overshadow the initial effect either. That non-targeting, battle removal, every turn is almost reminiscent of a particular Neo-Spacian monster that (despite it’s own Archetype being akin to a trash fire) found a home in several decks and tons of side decks. And much like that monster, Penalty Box may be passed over for the likes of a Gameciel, but just let me point out that Gameciel isn’t exactly once per turn, continuous either.
Yes it needs to stay alive but your opponent needs to ask themselves if they want to give you a free search. If they don’t want to give you the search, but they want to get rid of the spell they need to banish or spin and that kind of specificity could make that more trouble than it’s worth. Solid card – I wish there were hockey U.A.s but that’s neither here nor there.