The Magic card Aerith Rescue Mission encapsulates that choice perfectly: you can either take the elevator, giving you three 1/1 Hero Tokens (representing Cloud, Tifa, and Barrett being ready to fight), or you can take the stairs, which lets you tap and stun up to three creatures (representing their cardio-induced duress)
Most decks in this format will have enough cards with Bargain to make this worth playing
Invasion of Ikoria #190 March of the Machine Change Version Invasion of Ikoria Battle Siege (As a Siege enters, choose an opponent to protect it
In modern SV sets you see rough guides like a Double Rare around 1 in 5 packs, an Illustration Rare around 1 in 12, an Ultra Rare around 1 in 15, a Special Illustration Rare around 1 in 90, and Hyper Rares in the 1 in 300 to 700 range, and any one specific card runs far longer than its rarity band suggests
As an aside, the Signets are significantly worse being that much more awkward to use immediately
(5/1/2012) If there are no nonland cards left in that library, the opponent will exile all cards from their library, and Stolen Goods will finish resolving.