The practical takeaway sits one tier down: the affordable cards, like modern chase cards, tend to be cheapest and most available in Japan, the very market that produced the grails in the first place
A lot of other notable cards are falling through the cracks by doing so: The Mind Stone and The Soul Stone are, for example, not going to make the list, as well as some other headliners
It becomes cheaper to cast as the game progresses and the graveyard fills up, and it even lets you take control of your opponent so you can make them enact their own demise
If you want to perform a character action that requires exerting the card (questing, challenging, and certain abilities), that card must have been in play since the start of the turn
This is incredibly generic and can be fitted into any deck that would prefer their Pokemon stay on the field longer
Many collectors open packs to get most of a new set, then switch to singles for the last few cards they couldnt pull
