The art here actually reminds me of the album cover for Cattle Decapitations' "To Serve Man" album which sorta depicts the same thing
Casting Overwhelming Stampede gives all your creatures a huge boost to their power and helps you swing for a win
Monsters like "Cheermole" and "Sword Fish" can manipulate ATK and DEF permanently in large increments and continue to do so if they can remain on the field while others like "Fire Mufflerlion" and "Spikeagle" grant bonuses for attacking by providing a second attack for one of your monsters and piercing damage respectively
Its not a particularly innovative mechanic or likely to be all that strong
Japan Japanese stock sells through Pokmon Centers, major retailers (Yodobashi, TSUTAYA, GEO) and Amazon Japan
Furthermore, its attack does 120 damage, meaning that it can easily deal with single-prize Pokmon before they evolve into more frustrating threats, making it an intriguing offensive threat with amazing defensive capabilities