So you wind up with a format where card quality matters more than synergy because there are more bombs than removal in half the decks. Ultimately, the problem here comes down to balance
If an effect, such as that of Doubling Season, causes Zaxara's ability to create multiple Hydra tokens, they each receive X +1/+1 counters
Combo Scrooge with Lucky Dime and the above Magica De Spell, The Midas Touch and youll be generating a hefty amount of lore before you know it, all the while dealing with any tricksy evasive characters on your opponents board
You need to be a permanent-centric deck to get the most out of this green planeswalker, but thats an easy ask
They're not authorized for sanctioned tournaments, and you can't sell them as official Magic: The Gathering cards or use Wizards of the Coast's trademarked logos commercially
As Ive said previously, its great when a CCGs in-universe characters reference each other via flavour text as it makes the world feel more connected and real