BLADE OF SHARED SOULS This one made waves in 60-card Standard, which is a big ask of an equipment card if you think about it
If you like legends, but you also like to do Aristocrats things and mayyyybe some combos, as a treat
It's a bit like a task you set to run in the background, and in this case it greatly affects your board with no extra effort
You can also use your collection (once you have amassed enough of a variety) to build your own decks of 20 cards that you can then use in either solo battles against AI, or against other players online
Still, there is a mysterious element to this whole process, as there is a range of possibilities that could happen with this card
The rest remain on your bench, a row behind your active Pokmon