It all stems back from the very first set, the Base Set, originally printed in English in 1999 - the big red lizard had the most hit points (HP) at 120, making it the toughest Pocket Monster to take down, the highest damaging attack (Fire Spin for a whopping 100 damage) making it the hardest hitting Pokmon without a drawback (were looking at you Chansey with your Double-Edge attack) and had the best resistance, it resisted fighting types by 30 damage, it also has an alluring and unique Pokmon Power which essentially meant any deck could run a Charizard, if you had one
POKMON CARD GAME Sword & Shield Expansion pack VMAX CLIMAX
With Klothys, God of Destinys ability you can get some much-needed rewards from destroying lands, since you not only get some mana out of it but also remove them from your opponents graveyards, ensuring they cant get them back
Pokmon Ranger Series: Ranger, Shadows of Almia, Guardian Signs
If you manage to sacrifice your lands for profit, like by using Zuran Orb, and then cast Balance, its going to be a huge blowout
If you dont need to draw and need to push damage through, it can also switch to a mass pump spell