darjr
I crit!
So, one thing I noticed:
EPIC BOON OF LUCK 20th-Level Feat Prerequisite: Expert Group Repeatable: NoImmediately after you roll a d20 for a d20 Test, you can roll a d10 and add the number rolled to the test. Once you use this benefit, you can’t use it again until you roll Initiative or finish a Short Rest or a Long Rest.No comment on the feat itself, but the bolded part is something I haven't seen before in 5e nomenclature, and is a more elegant way to implement per-encounter features than I've previously seen in the official rules. I hope it'll see some use outside of the Epic Boons.
This sounds like it would be useful for a great many things. What would you like to use it? I don’t think I’ve seen it before this test.