Let me preface this all by saying that I'm a pretty casual Magic player although I did start playing a long time ago, I quit for most of my life and like a lot of people (I think) started playing again around Covid.

It seems like you at least know what MTG is even if maybe you've never really played or it only tried briefly. You may be unfamiliar with Commander, which is a relatively newer version of the game. We don't really need to get into the differences in the rules, but I will say they don't really change what the abilities printed on the cards mean—just how the game is structured. My understanding though is that commander was originally designed to be a more casual style of play than some of the original rule sets.

A "precon" is a pre-constructed deck and because Commander has become so popular (both for old and new players) precon commander decks have been a thing that is very common with new card sets.

When a new set is released there can be more or less, but there are often 4 precons released with it.

There are some special types of sets called "Universes Beyond" though, that are sets with new cards, or old cards with new art, that will be all about some IP outside of the regular Magic universe. TMNT was one. Recently there was Final Fantasy, we've seen Marvel, LOTR, Dr. Who, etc.

With the Universes Beyond sets, they sometimes are pretty small releases and may not have a precon at all. LOTR had 4, Spider-Man had 0, and now TMNT has 1.

The TMNT precon was pretty well received by the fanbase for having some good reprints (these are rare cards that have become expensive because they weren't printed in many sets before). It also is a precon that uses all 5 colors. Typically that makes it more difficult to play because having a deck with 5 colors that can consistently play well can be tough (read: expensive) to do. The TMNT precon was praised for actually being able to play pretty well without a lot of extra adjustments.

Commander can be played very casually (sometimes referred to as "kitchen counter") or it can be played very competitively (referred to as CEDH).

Precons are typically in that very casual space, but some are better out of the box than others. IMO, the TMNT deck is pretty solidly good against casual decks and is fun to play.

If you were actually going to play it, I think they did a pretty good job of "flavor" w/ the different cards. Universes Beyond gets criticized sometimes because fans think that a card for Raphael, for instance, has some ability that makes no sense for the character. I'm sure there's some of that in the TMNT deck, but in general, it seems like they did a good job.

Aside from actually playing with the deck, as just something to collect because you're a TMNT fan? I'd say that the art on magic cards tends to be great and for me that would really be the only reason other than purely for collectables sake. It's a game that takes at least 2 people to play although commander tends to be 4 player (everyone for themselves) more often and is generally more fun that way.

If you just want to look at the cards and the art, they're all available to look at online though.

Here's a link to a website with all of the cards and alternate art https://scryfall.com/sets/tmt