final fantasy set booster box TCG - Legacy Collection and the ever SURGE or Bust! FINAL FANTASY

It only works on Summons that do not start a chain, like Special Summons from the Extra Deck, and because of this it often cannot resolve until your opponent has already set up a way to counter it or can play around the floodgate effect

One final note, you dont have to worry about these clogging your backrow after you Xyz Summon, because Pleaides can simply return it back to hand

Although defintely among the rarer English cards, even more true for the gen 2 one, this thread asked about TCG cards specifically

Urza left the miter in Tawnoss hands and went to fetch his chalice before the pair left for the interminable banquet