Poison! is an attack contact effect which provides a temporary moderate armour-piercing missile damage, armour-piercing weapon damage, base missile damage, base weapon damage, speed and vigour debuffs to an enemy unit when hit. It is the classic weakening attack effect in the Total War: Warhammer game series. Attacks imbued with Poison! are said to be poison attacks.
It can be devastating in missile units which can slow, fatigue and ultimately weaken incoming enemy units.
References to poison usually include poison and poison! with an exclamation mark (!). The effect is called poison! and the attack is imbued with the poison effect.
Poison! vigour reduction increase a unit's fatigue per tick. For example, a unit engaged in combat normally gets 19 fatigue/tick. When poisoned, it's now 22 fatigue/tick.
Trivia[]
The Lizardmen, Greenskins, Nurgle and Warriors of Chaos have the most units with Poison! available to them.
In WH1 and for a time in WH2, this effect inflicted -20% to all stats affected (aside from vigour which has remained the same).
Poison! is an attack contact effect which provides a temporary moderate 
armour-piercing missile damage, 
armour-piercing weapon damage, 
base missile damage, 
base weapon damage, 
speed and 
vigour 
debuffs to an enemy unit when hit. It is the classic weakening attack effect in the Total War: Warhammer game series. Attacks imbued with Poison! are said to be poison attacks.
Poison! (10s)
Lords
Infantry
Missile Cavalry & Chariots
Monsters & Beasts
Missile Infantry (ranged attacks)
Cavalry & Chariots
Monsters & Beasts
Missle Monsters & Beasts
Extended Roster
Artillery & War Machines
Constructs
