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Experimenting is one of the biggest ways we find how a Pokemon is viable or not and tends to lead to new meta trends - the rise of PixiBoom STail and new sets like mixed Dnite can be alluded to that. The difference between heat / a new set that has potential to be viable and garbage is quite...
Yes, specifically for one day - day one of SV AAA. Zamazenta is nowhere close to Slaking in terms of power - 160 Attack is pretty fucking broken and with sets like Guts + Facade or just CB SoR, it will be very broken