Assassin

From publisher blurb:

This edition of “Fantastic Feats” – a series of feats based around a certain theme or subject – is about the prestige class called the Assassin, those feared people who kill for money and sometimes take pleasure in the fact.

The feats inside:

Biding Time - going last in combat can have an advantage
Lingering Damage - The effects of certain attacks last longer
Modus Operandi - Become known for killing a certain way and get a bonus
Skilful Assassin - The knowledge gained as an assassin can help in many ways
Stare into the Abyss - Thes are windows to the soul
Stealthy - Stealth attacks are the lifeblood of many an assassin
You know who I am - The assassins reputation can work in their favor