The July Saikyo Jump promo introduces an old mechanic to Rush Duels: Double Tributes!
RD/SJMP-JP002 – Justice Dragon
LIGHT, Dragon/Effect, Lv 5, ATK 1200, DEF 1200
[Requirement] You can shuffle 2 monsters (Dragon) from your GY into the Deck.
[Effect] This turn, if you would Tribute Summon a monster (Dragon) in Attack Position, you can treat this face-up card as 2 Tributes.
Source: Yu-gi-oh.jp
