Quickleaf
Legend
[MENTION=6801328]Elfcrusher[/MENTION] Nice design on this warlock patron! Write up some flavor and clean it up, and I think with your ideas you could publish it.
As to your question, without a doubt Cackle is plenty potent already as an action. Keep it as an action.
Also, you should clarify that the disadvantage lasts until the start of the warlock's next turn. And you should clarify the range (i.e. "all creatures of your choice within 60 feet who can hear you...").
A blanket disadvantage to pretty much all rolls imposed on probably most (if not all) creatures on the game map? And it targets a save that's usually weak for monsters? And the warlock can do it multiple times per short rest?
Definitely should require an action.
As to your question, without a doubt Cackle is plenty potent already as an action. Keep it as an action.
Also, you should clarify that the disadvantage lasts until the start of the warlock's next turn. And you should clarify the range (i.e. "all creatures of your choice within 60 feet who can hear you...").
Starting at 14th level the Warlock acquires a mocking laughter that enemies find deeply unnerving. When the Warlock uses an Action to Cackle, all enemies within 60’ who can hear the Warlock must succeed at a Charisma saving throw or suffer Disadvantage on their attacks, ability checks, and saving throws until the Warlock’s next turn. This ability may be used as many times as the Warlock’s Charisma modifier (minimum 1), and all uses are regained after a Short or Long Rest.
A blanket disadvantage to pretty much all rolls imposed on probably most (if not all) creatures on the game map? And it targets a save that's usually weak for monsters? And the warlock can do it multiple times per short rest?
Definitely should require an action.