Inevitably, the team is also known as the Vs - here is their simplistic V logo. I like to think this replicates a little of the Cardinals' menace
I prefer to make up expansive team identities with multiple nickname possibilities, like the Bronx Bombers, so if the real Cardinals can be the Redbirds, of course this could be the St Louis Victors or Vs
edit: I stuck the bird I drew on here too
I think that's the one I'm going to use