He can provide you with constant fodder, buff up a whole board (as long as you're playing a Cat deck), deal damage to pick off weak creatures, or pressure your opponent
Its a management issue whether you want stronger creatures on the battlefield or more cards to play with, and you can even get rid of -1/-1 counters if thats the case
This, of course, means that Twilight Masquerade is focused heavily on the wild Pokemon of Kitakami, including the headlining Legendary Pokemon, Ogrepon, which has multiple different cards based on its various elemental masks
Activate only as a sorcery." The number of creatures you control is determined as the activated ability resolves
I totally oppose the idea of not applying an errata to the old werewolves
These cards are pulled from prerelease kits you can only get from attending a Pokemon prerelease event