Players can get a reading from a character in-game, of course, but there are also ways to use the cards to plan out encounters, traps, or small adventures
There are 14 Secret Rare cards in Sword & Shield
If this card is Special Summoned from the GY: You can discard 1 card, then target 1 card on the field
21/102 Electrode
The card in question will let you know if you can do so, but it's fairly common for cards to have activated abilities that only work if theyre in a graveyard, like Balustrade Wurm, Bloodsoaked Champion, or Reassembling Skeleton
To a player more versed in how card games work though, only a single look at this card is all that is required to figure out that this card is obviously meant to be part of some wacky combo