1. http://wowwiki.wikia.com/wiki/Roiling_Blood
2. If you spread dots who are affected by proccs (such as trinket proc etc which incrase DMG) They will do the same damage even tho your buffs are gone etc.
3. If you reapply Dots/Bleeds or whatever, the damage should be equal ur stats which you had when you re-applied the dots, not equal ur stats you had when you applied the dots first time like 2 minutes ago.
4. 17.01.2017
5. fun
6. 7/10 It's obvious huge because once a dk bursted in 3s he will obviously keep spamming blood boil because he needs it for his runes. In 3s you will most of the time have dot's at the end of the game which were affected by the opener proccs. If you stand near him + he doesnt plague strike on you.
Proof
+
To make it simple: Blood boil should overwrite your dot's with new one (with the current proccs u have etc)
Just watch the video for like ~1 minute, this mult r1 Dk explains it pretty well :)