Nobody needs these anymore, and it's arguable if they were ever good
But the only Kingdom cores left on WM site are the two boners
Dracodon seems perenially available
& Vertebreak has been floating in & out of availability
Both are on clearance for seven bucks apiece
https://www.walmart.ca/en/ip/transfo.../6000202304823
https://www.walmart.ca/en/ip/transfo.../6000203840346
Also picked up my pair of Kingdom Netflix spoiler packs last night, they're real! They even left em in the Hasbro brown shipper box, which was cool to see
