If you have two non-Hydra creatures with Wildwood Scourge's ability (perhaps because they were mutated using the Ikoria: Lair of Behemoths mutate ability), putting a +1/+1 counter on any non-Hydra creature you control will cause the two abilities to trigger each other indefinitely
And with a catchphrase like Gotta Catch Em All., its easy to understand why
Invisible Stalker can crash through the red zone unimpeded and do massive amounts of damage with the right support cards
While I guess you could try to flip it into a 3/4, and that might be the right line in some situations, I think there would be decks (at least in Standard) that would play the front side as a sorcery
By protecting your cards, you'll be able to enjoy them for years to come and pass them down to future generations
The reason this rule has been added is because too many people are asking about prices for commons, and pricing is too time consuming to price out cards of these rarities when the vast majority of these are worth less than fifty cents
