If my memory serves correctly those are Liliana of the Dark Realms and Liliana's Shade
With any sort of luck, some of the creatures you play will have your life drain death triggers on them
That's why Upheaval is such a bomb: there are virtually no ways to deal with it, and once it is cast you can end up with two to three creatures plus a land on the board while your opponent literally has nothing, and has a hand full of sixteen cards they need to discard down to seven
Lucius the Eternal Lucius, as you might imagine, is eternal, never truly dying as a champion of Slaanesh
If you have interviewed Sebastien Moreau then you get an extra clue on one of the locations straight off
Elrond, Master of Healing and Galadriel of Lothlrien are two peas in a pod and that pod is the Elven Council Commander deck