Bombshell Bill Blaster
From the Super Mario Wiki
Bombshell Bill Blasters (abbreviated B. Bill Blasters) are gold versions of Bill Blasters and shoot one or two Bombshell Bills at a time. They appear in Paper Mario and Paper Mario: The Thousand-Year Door in groups of two, found only in The Palace of Shadow. They, like Bombshell Bills, are golden in color as opposed to the usual black.
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