Poisoner Expert [Multiclass]
Prerequisite: 8th level, Poisoner
Benefit: You can swap one 6th-level or higher utility power you know for the potent poison utility power.
Feat UtilityPotent Poison
Your poisons have an insidious effectiveness.
Free Action Personal
Trigger: You miss with an attack that has the poison keyword or a poison effect.
Effect: Reroll the attack roll.
Published in Dragon Magazine 373, page(s) 16.