You can look here if you like Dranxadin:
https://www.warcraftlogs.com/reports...done&source=19
There's a section in my cenarius fight from last night where I had 5 stacks of Wrath of Consumption, with and without Reap Souls, right around the 5 minute mark. Just looking at the non-crit tick values: without reap souls and 5 stacks of wrath I had 49.9k corruption ticks, 78.3k agony ticks, and 46.3 siphon life ticks. With reap, it jumped to 65.1k corruption, 101k agony and 53.9k siphon life respectively, for bonus damage of 30%, 29% and 16% respectively.
These are not the values I expected. I expected closer to 20% because reap gives 10% baseline, and the doubled value of wrath would be another 10% with 5 stacks. Maybe mastery is getting multiplied a weird way in here?
Edit: I should have said earlier, this is just evidence for Wrath of Consumption doubling. Not any of the other traits.