Ninjago Facts on Twitter: "105: 9573 Slithraa is the only Spinjitzu Spinner set to include a Serpentine Staff. This is likely because Slithraa was the original general of the Hypnobrai, before being
NINJAGO Masters of Spinjitzu Deck #2 Game Card *4 - Hypnobrai Rattle (Golden Card) : Gear 6007959 | BrickLink
Lego Ninjago 5 : Ninja Vs Constrictai: 9782351006771 - AbeBooks
Lego Ninjago Blue Rattla Snake Serpent Hypnobrai Minifigure | eBay