Features the Boonboom Supercar!
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Correction at the end: My next review will be the DX Scouting Panda Progrise Key!
These were released in the 4th wave of Shogukan (Candy Toy) Progrise Keys.
The DX version of the Sting Scorpion Progrise Key was released with the DX MetsubouJinrai ForceRiser. I wanted just the Progrise Key itself.
And yes, the Storming Penguin Progrise Key is exclusive to this wave.
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