Seven Kingdoms: Seowyn's Crossing
In the pursuit of power, glory, wealth, and other material rewards, many have made bargains and alliances that others would find insane. Few other paths to power, however, hold the stigma of those who have bound themselves to Shadow. Of those who have, few are as well known, or as feared, as the Assassins.
By bargaining with the might of the Shadowfell, Assassins give up part of their mortal self and become infused with the very stuff of shadow. This gives them the ability to move insubstantial and unseen among the mortal folk of Tol. Because few ordinary folk could understand how it would be worth it to give up part of one’s soul and substance to otherworldly energies, Assassins are considered mad and more than a little dangerous by the average citizen of the Seven Kingdoms.