theres a coloured set symbol (the location of which will be different if you have a full art card, but it usually appears just below the card art on the right side), and theres also a letter code, which youll find at the left bottom edge, next to the cards set number
Kaladesh is also the set where we introduced the "create" keyword action
Mint / Near Mint - In 'as new' condition
Maybe I just watched too much weird crap in my childhood with strange concepts and bad special effects, like the Doctor Who episode when basically Stonehenge attacks: (The Stones of Blood if youre interested)
Granted, I only lost two games, but still
Splendid Genesis was - unlike Proposal - a factory printed card and indistinguishable in quality from other Magic cards