As an aside, the Signets are significantly worse being that much more awkward to use immediately
Presenting FINAL FANTASY card sleeves of Lightning from FINAL FANTASY XIII
Pay X generic mana
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
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)
Often paired with Naganadel LOT, the deck would seek to flood the board with energy every turn, only to send mass amounts of it to the Lost Zone - Pokmons version of an exiled or removed from play area of the board