Ultimately, the value of Pokmon cards is shaped by a combination of rarity, condition, popularity, market trends, and historical context
Time Elemental's effect 'reverses' time by bouncing a card back to its owner's hand, but it also is such a strangely unstable creature that it essentially selfdestructs any time it blocks or attacks, and even deals damage to its controller
Lysandres Trump Card text was staggeringly simple, stating that each player shuffled their entire discard pile back into their deck, with the sole exception of Lysandre's Trump Card itself
Cards that repeatedly ping your opponents like Creeping Bloodsucker, Stormfist Crusader, and Descent into Avernus play well here
Super Rejuvenation (Quick-Play Spell Card) The card encourages terrible resource management in the monster type that makes the most use of discarding and tributing