Hammer and Sickle (5e Feat)
From D&D Wiki
You have become enamored with the idea of distribution of the wealth. Your sickle damage die is increased by one (ex. 1d4 is increased to 1d6). You also gain the following effects:
You can dual wield any one-handed hammer and a sickle, regardless of their weight.
Your weapon-specific bonuses apply to both your hammer and your sickle. In addition, both weapons share weapon enhancements when applicable.
You may attack once with both hammer and sickle as a standard action, using both damage die and combining each attack bonus; this also applies to opportunity attacks. You can do this once per level, every long rest.