Chainer, Nightmare Adept was always awesome and Llawan, Cephalid Empress saw a decent bit of tournament play for a while
The limitation here is relevant, but as long as you have something die that isnt named Dracolith, it will basically be in your hand again, ready to be cast, and thats pretty insane
Finally, you can also prepare a pregame conversation for each of your decks
That might look like exiling all cards in all graveyards forever or taking a more surgical approach, so you leave your own graveyard strategy untouched
Im more often going to push this effect into my manabase, though, and just play the MDFC Song-Mad Treachery instead
Simple, nostalgic, collectible, and designed with careeverything a fan expects from a yearly Pokmon release.