Rebuke of the Talisman

[ Représailles du Talisman ]
Prerequisite: Pact of the Talisman feature

Description not available (not OGL).
But here is a summary:

When the wearer of your talisman is hit, you can deal psychic damage equal to your proficiency bonus in reaction.
Tasha´s Cauldron of Everything
  1. DnD 5e Eldritch Invocations › Rebuke of the Talisman