The Smithing Mallet is now obtainable through the Floor 7 minibosses Garish Gerberea and Cruel Lion.
It is commonly rumored by fans and players to improve Smithing (just like the Crafter's Outfit) and/or higher chance for rare item drops from monsters, though no actual proof or words from the developers prove that it does supposedly improve it. It is currently only considered a collectible item.
NOTE:DO NOT DELETE THE GAMEPASS AND BUY IT AGAIN, IT WILL NOT GIVE YOU THE SMITH'S MALLET AND THE REST
Trivia
- The Smith's Mallet used to be only obtainable with the Blacksmith Starter Pack.