Probably the most useful Bebop & Rocksteady have ever been
Instead of rolling the dice on booster packs, you can just go buy the singles you want, or even check out other regions sets like Japan's Glory of Team Rocket
It is powerful, prevalent in the top tier of Modern, and is a key role-player that failed to live up to the doomsayers claiming it would be too good. 3
It incorporates smart counterplay through Ulti and Page One cards from Animal Kingdom Pirates [ST-04], designed to handle threats like Yellow Enel and Black Lucci decks
With effects that range from slow, steady sources of damage that drain your opponent 1 life at a time to massive spells that consume half their life at once, theres a life loss card for any strategy
Unlike most of the cards on this list (I have a playset from a different casual deck I built years ago) this is repeatable