So I'm making a Bard Rogue as a potential character for a D&D group I'm joining, and I was looking at Rogue at higher levels (debating between High Bard with Low Rogue or Low Bard with High Rogue) when I came across Reliable Talent PHB 96. It states
… Whenever you make an ability check that lets you add your proficiency bonus, you can treat a d20 roll of 9 or lower as a ten.
So here's the question. It specifically states "roll" not "result" which begs the question of is this ability referring to the end result being a 9 or lower (Including modifiers), OR the d20 roll without modifiers being a 9 or lower.
I personally think it is the roll before modifiers, since at level 11 you have a +4 Proficiency Bonus, but figured I'd ask here.
Best Answer
It's the roll before modifiers.
D&D 5th edition is very specific about its terminology. When it says a d20 roll, it means a d20 roll, not a result or a check.
Effectively, this ability means that you can never roll below 10 on the d20. Instead of a range of 1-20, your range is now 10-20. Hence "reliable" - you can be certain of at least average results every time.