The next row is just to keep track of which column I have already entered the contents of a pack in (sum of cards per column has to always be 6)
While not too powerful on its own, Toph's primary strength comes from letting you still get the benefits of your full mana pool by temporarily Earthbending artifacts instead, while doubling the mana potential of cards like Chromatic Lantern if activated in the correct order
With even more cards releasing before rotation comes into effect, you might even find a few new decks along the way that will carry you through the next era of competitive Pokemon TCG
There's also combo potential with cards like Triskelion: if you can first get a +1/+1 counter on Daggertooth then you can ping it with Trisk, proliferate both the Daggertooth and Trisk to add another +1/+1 counter to each, then repeat infinite times for infinite proliferate and an infinitely large Dino
6: For each creature card in your graveyard, create a token thats a copy of it, except its a 1/1 black and green Insect