will it get buffed or nerfed with new standard? I mean you are thining out expansions so does discover mechanic indirectly getting buffed?

Id imagine it would just stay the same as it is. And new cards would be an indirect buff/nerf.

i think that :
you have more chance to get a class card than a neutral
you have more chance to get a card from the latest expansion

so, it depends on the next expansion

you have more chance to get class card.

the higher chance to get card from latest expansion is when you draft arena, not discover.

but they are removing 2 adding 1? Idk depends on what they add