You should be able to add this card from the card database by setting it to show "All cards" (rather than Normal cards or Tokens) and turning off all other filters. Alternatively, you can also put the full name (The Ring // The Ring Tempts You) into the Card name search field in your Tokens section and press enter. It won't autocomplete but once you write the full name it should find it.
Hope this works! If not, please let me know.