Would something based on this workbook suit your needs?
1/. Create a dynamic named range for your die numbers
Name:=
"Unique_Dies"
Refers To:=
2/. Insert a column at the start of your sheet
Then in A2
Drag/Fill Down to suit
3/. In Column I enter a series of numbers 1 to suit (step 1) in this example = 20
4/. Use the name "Unique_Dies" as Data Validation in J2
5/. In K2 this array formula
Confirm with Ctrl + Shift + Enter not just Enter
Drag Down to suit
6/. In L2 this array formula
Confirm with Ctrl + Shift + Enter not just Enter
Drag Across to M2 then Down to suit
Select from the drop-down in J2
Note there is a more efficient way than these arrays for larger data tables, I can't remember it off-hand, but will find it if this method works for you
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