Use this to get helper input select in a custom lovelace card?

[joq3]

I am using a custom card called spotify-card: https://github.com/custom-cards/spotify-card
I want to be able to get the device to be whatever is selected via the input select:

cards:
  - type: 'custom:spotify-card'
    device: my_custom_input_select

Is it possible to do this with decluttering-card? The spotify-card does not support templating so I have to do it some other way. Hoping this will work?