Die Step Increase

A module for a specific homebrew rule for Feed5e homebrew. Creates an option for players to add a modifier that increases the faces of their spell die when granted by feats, items, etc. Die steps increase from d4 > d6 > d8 > d10 > d12. After d12, a +1 will be given for every die rolled, i.e, a fire bolt cantrip from a level 20 wizard with 2 spell die increases would do 4d12 + 4 damage instead of 4d10.

die modifiers like r,rr,x,xo, etc should work as normal. 

Also improves the functionality for upcasting spells. See readme for more details.