User blog comment:Spiderfreak1011/Unknown AR Card 405 not included in Kid Icarus Uprising as an idol?/@comment-86.182.249.233-20120630230040

I believe it's the Demonic Kettle card that was referenced in one of the trailers. I'm not sure what the demonic kettle is (it's not in the game as far as I'm aware) and is probably related to SSBB4. It could be given out at release events seeing as SSB4 is also made by masahiro sakuri