We're confident in that prediction because it has already started
Since Leafeon ex only requires one Grass Energy, Eevee can use any Energy, and Celebi ex also only needs a single Grass Energy, Water Energy can be incorporated seamlessly across the deck without disrupting its flow
This is not true for Marnie: when she's played, both players shuffle their hands and put them at the bottom of their decks, followed by the opponent drawing four cards and the player drawing five
The only thing it can't break through is Ward
Once per turn, during your Main Phase: You can change this card to face-down Defense Position
Drafters As a drafter myself, I've noted that interest in any particular set tends to wane after a couple of months when most formats are considered solved. Having a new set to draft is always welcome