When writing (or editing) game rules, please write "If you do [thing], you can then do [this other thing] only in [this way]." not "If you do [cool thing], you can't do [this other thing], except [this thing that is literally that other thing]." The latter construction is…🙃
— Chris S. Sims -soon- Zine Quest 2 (@ChrisSSims) December 21, 2019
If you have the 5e Player's Handbook, see Casting Time and Bonus Action on page 202 for an example of 🙃construction. That whole graf is a doozy, since it's also got dross re bonus actions. If you want further examples, happy to oblige if asked.
— Chris S. Sims -soon- Zine Quest 2 (@ChrisSSims) December 22, 2019