Cards = [ 
    {
     name         : String,
     mana_cost    : String,
     cmc          : Number,
     price        : Number,
     text         : String,
     related      : [ String ],
     related_id   : [ String ],
     scryfall_url : Url
    }, 
]

Sets = [ 
    {
     name         : String,
     code         : String,
     card_count   : Int,
     release_date : Date
    }, 
]