For most, to climb to legend you need to have an Arsenal of good cards as the meta always changes. The matchups you face because of the MMR system will lock you out. This is how Blizzard designed the game..
so you have to buy cards! Or spend an insane amount of hours grinding as F2P.
but also.. what’s the point of getting Legend anyways? Bragging rights?
“hey bro I spent $300 and got Legend”
you bro is like “$300 on a damn card game? Lol”
sticking with a budget deck and trying to grind to legend is madness.