Forge Master

This is a beautiful adamantine warhammer.
+2 to hit and +2 to damage and can cast:
{1} Hammer does an extra 2d6 against objects and
constructs
{2} All attacks with forged or crafted weapons
have disadvantage
{3} Causes one piercing or slashing weapon within
10 ft. to do half damage and can't critically hit
Each effect lasts 1 minute after casting