Can you make a macro with named values?

I don't really know how to explain what I want. but here goes! I'm trying to make a macro that gives me a set name for every value. I have 12 buffs in my campaign that is supposed to be randomly generated. So what I've done is make a macro with a gm roll of 1d12. But instead of rolling and going to my list and count wich one it is, I want the macro to tell me directly. I.e /gmroll 1d12 = 5(name) I don't seem to find anything, and also I don't know what I should search for. Please help! Thanks in advance!

you can make a   Rollable Table of 12 items, each one with the name of the buff. everytime you roll the table, will give you a random buff and you can also place a picture representing that buff.