If you have an engine to keep swapping out your Pokemon and reliably bouncing them back to your hand, you can set up a pretty nice damage cycle with relatively few cards
Based on initial analysis of the cards, there appears to be few contenders
The Squad mechanic returns from the Warhammer: 40,000 Commander decks, and the early previews also teased Storm, Proliferate and Split Second on at least one card
What is my top charting card
You can also add more counters using Skrelvs activated ability, which can be activated multiple times a turn if you include ways to untap creatures or artifacts
That extends to one very important set of objects, which are critical within the context of Final Fantasy, and are soon to be just as vital in the card game