Board Thread:Question and Answer/@comment-107.192.1.171-20170217214323/@comment-30563648-20170217233305

There are actually a couple of R cards that are algamatable to become SR --> UR. I would recommend looking up the R cards on the wiki and see if they're algamatable before making medaling. (Usually algamatable cards if you scroll below close to the comment section of each card it'll show you).