I am going to side more with it being a defect, but hard to be definitive
Cynthia's Spiritomb (244/217) is an Incredible Depiction of a Trainer With Her Pokmon Pokemon TCG Marketplace ME: Ascended Heroes This attack does 10 damage for each damage counter on all of your Benched Cynthia's Pokemon
That approach allows me to slam this card down worry-free because I know that it will not impact me, and if it does it will be very minimal
It's great, but you need to run it in the right deck, not every deck can get cards into the graveyard and some want to save them for reanimation like Living Death or recursion like Eternal Witness
A new way to win a Duel is introduced, where even if a duelist cant damage their opponent with the new themes monster, they can power it up enough to destroy 3 monsters, which automatically ends the Duel
NIFYrebellio didn't specify the playstyle for this deck