The best ways to gather the most amount of booster packs from the Celebrations expansion are through the Elite Trainer Box (10 Celebrations booster packs) or the Pikachu VMAX Premium Figure Collection (8 Celebrations booster packs), which also comes with a Pikachu VMAX figure
In this case, the ability to return a creature card from your graveyard to the battlefield is the reason why an echo cost is needed on such an under-statted creature
This isnt the easiest hoop to jump through, but a single counter means a lot (especially when paired with Proliferate cards, especially at instant speed)
Scry always comes with a number (scry 2, scry 4, etc.) which tells you how many cards to look at while scrying
They're the genuine first English Pokmon cards distributed publicly, predating Base Set boosters by roughly a month
It would be interesting to see how the other two lands would be answered