TTS to read current State of an entity?

[quaint bluff]

I'm working on an automation that will read my next alarm state to me when I plug my phone in for bed. I figure that will be easier than unlocking my phone, opening the clock app, and checking to make sure that I have an alarm for tomorrow morning at 7am.

I just can't figure out how to get TTS to read that while making an automation in the GUI.

[quasi hinge]

{{ states("sensor.phone_next_alarm")|as_timestamp|timestamp_custom("%H:%M") }}