Duel Links, and it b rings the most recent movie, Dark Side of Dimensions, to your mobile phone
Creatures don't even need to actually deal combat damage for Hopper's ability to trigger, they just need to have been declared as attackers letting you Maze of Ith or Labyrinth of Skophos a creature to get them out of harm's way but still get that clue
It needs another Fairy monster for the discard but with an additional effect
This allows this card to be very versatile, allowing you to survive the game for longer if your life is low or burn the opponents if it is high
Functionally, that means her token creatures protect her from attacks, but combined with other token generation methods, she can become a force to be reckoned with
Oh, some can be useful, but aside from a few exceptions, they tend to be outmatched by the newer cards