The only seduction spell I remember was the Houri from an early White Dwarf, which was horrendous.
These witches poisoned us by spells, in days when poison was save or die, cast crush spells that did immense damage, cast mass mummy rot and entombed characters in stone.
I was a player so didn't have the details, just felt the pain! I do remember that the half-elf mage, Calanthia, was slain and, much later in the campaign, we conquered our own city which we renamed Calanthia in her honour. I later also used the name as a powerful kingdom in a homebrew world.
so the power of the Witches of Marmon resonated.