Thank you .Impossible to solo since you can't bite pets. Minimum requires 2 people (DK + Lock and DK + Shaman both work but might be easier with a lock instead of shaman.)
1. DK gets bitten at start, bites the other person. Said person proceeds to kill themselves before the next bite
2. Other person self-rezzes (soulstone/ankh) before 2nd bite
3. DK bites second person who then proceeds to kill themselves again before the third bite
4. DK brezzes other person before 3rd bite occurs then bites that person again. Bite stacking debuff should wear off by now.
5. Kill Bloodqueen.