secret random results

Module Design
1

I have a question for the brain trust.
I am making a module where players explore a hex. The result is secret and permanent. I would like to leave a masked counter on the map belonging to the original discover. The owning player will show it to any other player who explores that hex.
Prospecting Tables
Die roll 1 Richness Die roll 2 Extensiveness
1 None 1 One
2 Trace 2 One
3 Poor 3 Two
4 Good 4 Two
5 Rich 5 Three
6 Pure 6 four

I would like the player to choose an option on his counter in the hex. And have vassal do the rolls and create a masked counter in that hex.
I am having trouble figuring out how to have vassal roll 2 dice and record the values on 1 counter.
Or I was thinking of making a deck to the 36 possible results. But how do I keep the deck full?
Is it possible to somehow “lock” the cards in the deck and have clones made, on the draw?

Ideas suggestions?

Thanks in advance Kevin.

2

It is easy to have a piece placed on the map clone itself and send itself back to the deck. Map Trigger (only if from deck) > Clone > Return to deck. Or use Place Marker instead of Clone.