It would.... It could easily cause respiratory depression to the point it kills you. That being said those are very low potency compounds even though they can create just a strong effect as other opiates and benzos. It is not recommended to combine them, but if you do remember:
1. Dose low on both. You can always use more never less.
2. Don't take this combo alone first time because if you fall asleep and develop that respiratory depression you will die.
3. Keep narcan around if you can. If not place a note next to you stating what you took in case you fall asleep so if someone finds you blue lipped and calls for an ambulance they know what to tell them. Hell write instructions to call emergency services if you're found unresponsive. If it's not needed great you won't let anyone see it, but it's better to be safe then sorry.
That being said I can't recommend you combine them as you don't sound responsible enough to know your limit.... Sorry if you take offense, but I'm honestly trying to save your life and prevent you from developing a taxing habit or even two. Look up opiate/benzodiazapine dependency and withdrawal. If you still want to risk using after that go ahead, but trust me you'll regret it and not know what you are getting into.