Class Dice-based features tracking in 5e 2014 sheet

Hi! I'm playing a homebrew class by LaserLlama called Savant (though I know some RAW classes do something similar) that has an "Intellect Die" mechanic where I have a dice of a certain size (d6, d8, d10, or d12 depending on level) that I can add a roll of that die to certain checks in certain situations. Savant gets the d6 intellect die at level 2, and upgrades to d8 at level 5, d10 at level 11, and d12 at level 17. Right now I'm using a resource tracker to keep track of that die, but I'd like to have a table or equation for it somewhere in my sheet so that I can reference it whenever and add it to my rolls as a global modifier with a toggle, and so that it automatically upgrades in size based on my level according to that table. This way I can also make more macros that reference it to make other abilities easier so I can hopefully remember more of my character's abilities. I can attach her sheet if that'd help.

Hi Dvallin,  Go to the Attributes and Abilities tab On the Attributes side, click Add Scroll to the bottom.  Name the Untitled field to "Intellect-Die" (without quotes, but with the hyphen), then hit your enter key In the first box after the name put: d[[{@{level}-4, @{level}-10, @{level}-16}>1*2+{@{level}-1,0}>1*6]] How this works: It checks your level, subtracts a value, then checks to see if it is equal to or over "1". If it is it is multiplied by 2 (or 6 for the base d6). Then that is summed up and that becomes the size of the die. Wherever you'd like to use this die use @{Intellect-Die}  If you want multiple Intellect Dice you can do: #@{Intellect-Die} where # is the number of dice (such as 2). 

Very unique idea for a subclass, I love it

Simplified formula: d[[{2, 2, 2, 5, 11, 17}<@{level}*2]]