Frostner might be one of the best weapons in the game overall, if not the best. Sure we have weapons with better stats now but you build it in the mountains, and it still is incredibly powerful in mistlands. The knockback, the frost damage, the slow, all that together make it ridiculous. It's in the same category as the finewood bow of overal usefulness, you can build it in the meadows, skip the huntsman bow as it isn't worth it and finally upgrade it in the mountains, heck it's still killing fullings without a lot of problems.