Theres a ton of applications for this: you can elk your own cards once youre done with their effects, you can elk the Food token he makes, and best of all, you can elk your opponents big creatures and artifacts essentially making Oko a persistent answer to that your opponent will need to play around
There's also a ton of variety in these formats with their own deck construction, card legality, and even special rules
Great protection for your printed art sleeves or regular sleeves
That'd definitely make people think twice before forking over hundreds of dollars for a single card
[2] (Quick Effect): You can Tribute 1 monster this card points to
Charizard EX, Alternative Art (Special Illustration Rare) To absolutely nobodys surprise, the most expensive card from the Pokmon Card 151 expansion is, of course, the Charizard EX Special Illustration Rare variant