Joke of opportunity

You have practiced techniques useful in stupid combat, gaining the following benefits:

• When a creature within 30 feet of you leaves you open for a bad joke, you can use your reaction to make a spell attack against that creature. (~10d8 damage, based on the ccringe of the joke)
• When you damage a creature that is concentrating on a spell, that creature has disadvantage on the saving throw it makes to maintain its concentration.
• You have advantage on saving throws against spells with verbal components.