Madame Alexe Popova's Tea Set

Origin
From the late 19th to the early 20th century Madame Popova helped over 300 Russian women trapped in unhappy marriages become merry widows by inviting their husbands over for a cup of poisoned tea.

Effects
As a result, any married woman who drinks tea from Madame Popova's tea set will develop a strong urge to murder their husband.