Superior ride the correct Kaiser.
V-SS09/037 RRR スパークアロー・ドラゴン Spark Arrow Dragon
Grade 2 / Normal Unit / Dragon Empire – Narukami – Thunder Dragon
“The arrow of lightning crosses a huge distance.”
ACT (RC) If your vanguard has “Kaiser” in its card name, COST [Soul Blast 1 & Retire this unit], search your deck for up to one card with “Kaiser” in its card name, Ride it as Stand, shuffle your deck, and until end of turn, if your opponent’s rear-guards would be retired, bind them instead. This ability may only be used by a card with the same card name once a turn.