Sometimes they changed back, in the case of Werewolves, but this was the general idea
Randomly select 1 card in your opponents hand and declare 1 type (Monster, Spell or Trap), then reveal that card, and if it is the declared type, inflict 500 damage to your opponent
When it connects, you have to Convert it to Blitzwing, Cruel Tormentor
This movie calls the credits routine and it plays in full, but there are no flags set in the save file, so it may be unsatisfactory for game completion
Its an extra $20 too, which is just enjoyably inconvenient
You can join forces with legends like Cynthia and her Garchomp ex, Ethan and Ho-Oh ex, or Arven and Mabosstiff ex or switch allegiances and battle alongside Team Rockets powerhouses, like Mewtwo ex under Giovannis command