Hiya!
By the rules as written, a bard is able to do an absurd number of things with his mouth all at once. He can cast a spell with verbal components and his flute as a magical focus WHILE ALSO composing and reciting an inspiring ditto to bolster his comrades' performance (Bardic Inspiration) WHILE ALSO wittily insulting his opponent's pants in order to distract him (Cutting Words) from Counterspelling the wizard.
This is ridiculous, and it happens because WotC basically pays zero attention to what is physically happening in-game during a combat round, as long as it meets their action economy standards.
But the thought occurs: why not just add the restrictions back in? Bardic Inspiration can go from "as a bonus action" to "as a bonus action and when your mouth is not otherwise occupied in spellcasting or speaking"; Cutting Words can likewise can go from "as a reaction" to "as a reaction to a situation you see developing, if you did not cast a spell with verbal components this round". It weakens bards slightly from a purely mechanistic perspective, but that's a small price to pay for not having an utterly stupid combination of class abilities wrecking everyone's suspension of disbelief and the DM's ability to describe what is actually happening.
The Bard isn't "broken"...the DM is.
Player: "I'll cast
Dancing Lights with my flute as a focus, as usual. Oh, and I'm going to use
Bardic Action to help out".
DM: "Ok, you start playing your flute. It's a happy little ditty that evokes images of dancing faerries over a calm lake, with small little bursts of energy. Everyone in your group smiles as they remember the song you've regaled them with many times before. Some of the orcs follow the lights down the corridor to your left where you cast them, thinking the lights are more of you guys".
Player: "Hah! Oh, as they go down the corridor I'll use
Cutting Words on the last one"
DM: "Hmmm....ok, the tune takes a surprise turn, with a
whaaaaauuu... whaauuu, whaaaaahhhh... whaaaaaaaa sort of 'fail song' that you hear on game show's nowadays when someone fails. The last orc understands the tones and shoots your a sharp gaze. He's not impressed and stops, turning around. The others continue on following the lights".
There. Bard "fixed". You're welcome.
As I said...rules aren't broken...DM is. Yes, there
are some combinations of things that happen in the game due to RAW. And, as I've said in another thread, when RAW just isn't going to work, casually take
off the RAW glasses, reach over, and put
on the RAI glasses. Then re-read the rules. Adjudicate as necessary.
^_^
Paul L. Ming