BotINKi
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14. L35. The cloak is assembled! We kill the guardians one by one at point 21-11:30; 19-11: 50 ghosts; 20-12:50 guardians. We get 52 liches for three battles. (you can get 53 if you kill 30 guardians first, then 50 ghosts, 50 guardians).
21. L477. We kill 50 liches at 18-14. -10 liches (can be -9 liches). + 40 liches.
4. L787, L1, L1, L1, L1, L1, L1. We kill 400 death knights at 17-13. -6 liches (can be -2 liches). +360 liches. We get angel wings.
It's not very clear for us, the losers....
Added 3 minutes later
Okay... I understand about -6 and -2...;), but what about the others?