The smaller the gap between prices, the more easily the card will move and the higher real-world value it has
Sending someones hard-earned graveyard back to their library can be a back-breaking play against reanimator decks, Underworld Breach, or even Thassas Oracle, as your opponent will often have too many cards in their library to win the game after putting their graveyard back into their library
Switch prevents the opponent from trying to stall you out when they drag a helpless Pokemon to the active spot but it can also rid your active Pokemon from status and other negative effects that the opponent may have placed
If Endless Detour targets a token, that token is put into the library, then ceases to exist
It doesnt really slow people down, as such, but seeks to provide a puzzle to solve
With both Charizard ex having powerful attacks, you might want to know what a list might look like, so here is my early list that I have been theorizing