It’s a part of the Jumble Treasure BOX at the Jump Victory Carnival.
People in Japan can apply to get the “Jumble Treasure BOX”, a collection of goods meant to tie-in with the August “Jump Victory Carnival” stream (since COVID-19 is still a major danger).
30,000 People will win randomly at the lottery. And one of the promos is Luke’s “Nightbringer Dragon” from Yu-Gi-Oh! SEVENS!
RD/VC21-JP001 ナイトブリンガー・ドラゴン Nightbringer Dragon
Level 7 DARK Dragon-Type Effect Monster
[Requirement] You can activate by sending the top card of your Deck to the Graveyard.
[Effect] Your opponent draws 2 cards. Then, inflict 100 damage to your opponent x [The number of cards in your opponent’s hand].