I’ve looked around a little, and found some mentions of using Lutris, or running it through Steam (tbh I don’t know how that would work), but I’m not really able to find any guide that explains the process well enough. I’m so used to the game being handled by Blizzard’s Battle.net launcher, so I can’t really wrap my head around how that would work.
This is unlikely to work, since kernel32.dll is expected to come from and match the Wine build used to run the game/launcher, and Debian’s Wine is pretty much vanilla while Blizzard games often require patched Wine variants.
Debian gamers will want to enable the i386 architecture alongside the native amd64, then install Debian’s wine package to pull in Wine dependencies (but not actually use Debian’s Wine), and then use a game manager like Lutris or Bottles with a Wine variant like GE-Proton to run the game.