Underworld Feats

Venomous Edge (Tier 1)

Your blades carry not just precision but the insidious bite of poison.
Prerequisite : Expert in Crafting, Alchemical Crafting
Action : Free Action, Trigger: You hit a Flat-Footed enemy with a melee Strike.
Effect : You can apply a dose of poison to your weapon as part of the attack, even if the poison wasn’t applied beforehand. The target takes the poison’s full effects with no delay (saving throws still apply). If the target is already poisoned, they take an additional 5d4 persistent poison damage.

Whispers in the Dark (Tier 2)

Your mastery of subterfuge allows you to spread fear and chaos with mere words.
Prerequisite : Mastermind Racket, Master in Deception
Action : 2 Actions
Effect : You speak a phrase of unsettling intent, targeting up to 3 creatures within 30 feet. Each target must succeed at a Will save (DC = your class DC) or become Frightened 2. Targets that critically fail are also Confused for 1 round as paranoia overtakes them.
Special : If you are hidden or invisible when you use this ability, the DC increases by 2.

Silent Predator (Tier 3)

You move with such grace and precision that your strikes seem to come from nowhere.
Prerequisite : Legendary in Stealth, Quiet Allies
Effect : You automatically succeed at Stealth checks to Avoid Notice or Hide unless your roll is a natural 1. Additionally, when you strike from stealth, your attacks deal an additional 4d8 precision damage, and the target is Flat-Footed against your next attack, even if it detects you afterward.

Shadowy Savior (Tier 4)

You become a ghostly protector, rescuing allies from danger without ever being seen.
Prerequisite : Legendary in Stealth, Mastermind Racket
Action : Reaction, Trigger : An ally within 30 feet is attacked or fails a saving throw.
Effect : You instantly move to an adjacent space to your ally (without provoking reactions) and grant them a +2 circumstance bonus to AC or saving throws against the triggering effect. After this action, you can attempt to Hide or Sneak even if it isn’t your turn.
Special : If the attack still hits or the ally fails their save, you can share the damage or effects with your ally, reducing the severity of their condition.