The "Put 10 damage counters instead of 1 on that Pokmon between turns." part is also prevented, so if your opponent's Active Pokmon is already Poisoned, the Poison does not get changed into 10-damage one
Unlike in the mainline Pokmon games, where its easy enough to simply level up monsters and then brute force your way through gyms as you head toward the Elite Four, Pokmon Trading Card Game requires a fair bit more strategy because of the tabletop games core mechanics
The game challenges players to collect a deck of Pokmon cards, customizes and use them against other computer opponents or human players in battles
making instant and sorcery spells uncounterable guarantees that your critical board wipe will resolve, and giving spells rebound really makes the value snowball out of control
Opalescence Market Price: $27.92, Foil: $247.88 Urzas Destiny has a strong enchantment-based theme thats located mostly in white, and Opalescence is a headlining part of that focus
Counter spells to remove the treat before it ever has a chance to resolve Artifact removal: Vandalblast, Gemrazer, Abrade, Disenchant, etc