This prevents you from playing lands, though that shouldnt be an issue if you already have Closet open
New games, new shows, new card sets keep coming out
Before the tournament, I wasnt sure exactly where Id want it or how good it would be, and during the tournament, I realized that Amulet Titan was a horrible matchup for me, which wasnt a great thing to realize in a tournament where it was tied for the most-played deck, but I discovered that Oko was also a reasonable desperation move that I could add to my deck in any bad matchup where I needed to be able to close a game quickly, something my deck generally cant do, and it actually let me win a match against Amulet Titan
They're easier to summon than any other extra deck summon
Gotta catch em all
Each step of printing gives us a new place where something can go wrong, resulting in a ton of really cool variants of ink errors