It's an idea but we'd need to know more about the die/dice. With what were its faces marked? Dice are used in magick for the reasons you say but usually for a yes/no answer (so evens = yes, odds = no or vice versa)

But I can see what you're getting at.
You have a question and the answer lies in the meaning of the card. Yes, that would work.

All success with the idea.
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