Beginning with the Scarlet & Violet expansion, all cards past the Double Rare rarity are considered Secret Rares, adding to the excitement and intrigue in discovering and collecting them
On the other end, the more challenging sieges, like Invasion of Arcavios and Invasion of Alara, enter with seven counters
Mix in some recursion through cards like Splendid Reclamation and Crucible of Worlds, and you can easily ramp up your mana to do it all again
Being able to put 130 damage on board for 1 Fighting on a 1 point Pokmon is freakishly efficient regardless of the downside, and its big weakness of being a Stage 2 can be mitigated by "Rare Candy", meaning the only real issue with "Rampardos" is its Basic form not being searchable with "Pok Ball" due to being a Trainer Card
A card like the now banned Hullbreacher is one of the best examples of flash elevating a cards power level to the next level