With English's Pokemon TCG era appropriately called 'Mega Evolution,' you can expect there to be plenty of new Mega Pokemon featured across the generation, but it's hard to imagine that other sets can top the sheer variety of valuable cards in the Mega Dream ex High Class set
This will remove any dirt or fingerprints that might have accumulated since the last time you played
The fact that it also helps Amp You Very Much do 140 instead of 120 damage is also a great perk
Kiora, the Rising Tide serves a different purpose, as I can see this card slotting into Dimir Midrange
They are powerful, however, and will almost always improve a decks performance
Both my brother and I dove head first into the Oldschool format, and started building fun budget decks, both agreeing that we would never spend the money on Power Nine