Devs can release only banners for the kingdoms which don’t have any…
There are 120 different 3-colors banners so 4 more for free is quite nice 
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Okay so the banner with the…:
- … treasure: Vault (same color than Cedric)
- … helm: Guardians
- … thunderbold: Apocalypse
- … meteor: Imps
- … eye: new kingdom (maybe beholder kingdom)