Siege cards are generally only good if the front face of them is worth playing, and Invasion of Regatha justifies itself by having some of the highest direct damage a three-mana spell can afford
card is Exodia the Forbidden One , because assembling all five pieces wins the duel instantly, regardless of the board state or Life Points
Its inclusion in multiple game regions, from Kanto to Galar, ensures that newer and older generations of Pokmon fans are familiar with its kicking prowess
So, yes, if you want you can just get that alt-art Lost Origin Giratina, or the Evolving Skies moon-loving Umbreoncards that in real life could set you back $500
Exiling and returning something to the battlefield to retrigger its enter effects is always powerfull, and Y'shtola gives you a way to do that for free every turn
Abilities are becoming bigger themselves, and theyre becoming bigger parts of the game