creature vs wild card

creature

noun
  • A being subservient to or dependent upon another. 

  • A living being; an animal. 

  • A human. 

  • A created thing, whether animate or inanimate; a creation. 

  • An unidentified, mysterious, and often monstrous animal or being. 

wild card

noun
  • A competitor or team that is allowed to compete in a tournament despite not reaching the normal standards to qualify for inclusion. 

  • A card that can be assigned any value or used to substitute for any needed card. 

How often have the words creature and wild card occurred in a corpus of books? (source: Google Ngram Viewer )