Agonising Blast
Agonising Blast adds the Warlock's Charisma modifier to Eldritch Blast damage unless that modifier is negative.
How it works
Warlocks select Eldritch Invocations as they progress; the passage lists Agonising Blast among the level-two options. Its effect applies when casting Eldritch Blast. The Charisma modifier is added to the damage unless it is negative.
Read the supporting references
Selected Fighter fighting styles and Battle Master progression, Warlock invocations and Pact Boons, and Ranger Favoured Enemy and Natural Explorer choices. Effects and explicit conditions are drawn from the supplied passages; comparative effectiveness is not assessed. Guidance explains the referenced mechanics; it is not a tested damage ranking. Check the stated edition and source version before applying a patch-specific detail.