First, the creature tells the game it needs to die via state-based actions
Those cards have been well on their way to becoming unaffordable in the original Japanese, so the more of that set we see finally get adapted into English, the better.
Its also gotten stricter over time, according to SGC grader Derek Grady, who told Sports Collector Digest in 2019 that In the early days of PSA, cards that were graded an 8 for the most part now if you cracked them out and resubmitted, they would grade lower. Nowadays, PSA uses the half-point system that many other services in the card grading industry also favor, which can be broken down like this: PSA 10 / Gem-Mint (GEM-MT): a virtually perfect card, according to PSAs website
However, it also doubles as a way to deal damage
In the Pokmon TCG: Black & WhiteEmerging Powers expansion, astonishing new Pokmon are available for the very first time, including the rare and powerful Legendary Pokmon Cobalion, Terrakion, Virizion, Thundurus, and Tornadus
Counter-Attack: A few Pokmon such as "Poliwrath" ( Genetic Apex ) and "Druddigon" ( Mythical Island ) have abilities that inflict 20 damage to the opposing Active Pokmon if it takes damage while in the Active Spot
