I was fond of this deck ever since I heard about it, so here's my shot at it.
Pokemon (21):
4-3-3 Gengar (2 prime, 1 SF)
2 Spiritomb AR
2 Unown Q
2-1 Uxie LV. X
1-1 Slowking HGSS
1 Mr. Mime CoL
1 Azelf LA
T/S/S (27):
3 Bebe's Search
1 Interviewer's Questions
2 Lost World
1 Palmer's Contribution
3 Pokemon Collector
3 Pokemon Communication
2 Professor Oak's New Theory
4 Rare Candy
3 Seeker
3 Twins
2 VS Seeker
Energy (12):
9 {P}
3 Rescue
Strategy: Start with Tomb and evolve into Gengar SF or Prime and get out Mr. Mime to make sure hurl into darkness works. Slowking is for disruption so you can keep those 4 trainers in their hand for Gengar SF or let them draw a useless pokemon for you to Hurl into Darkness.
Pokemon (21):
4-3-3 Gengar (2 prime, 1 SF)
2 Spiritomb AR
2 Unown Q
2-1 Uxie LV. X
1-1 Slowking HGSS
1 Mr. Mime CoL
1 Azelf LA
T/S/S (27):
3 Bebe's Search
1 Interviewer's Questions
2 Lost World
1 Palmer's Contribution
3 Pokemon Collector
3 Pokemon Communication
2 Professor Oak's New Theory
4 Rare Candy
3 Seeker
3 Twins
2 VS Seeker
Energy (12):
9 {P}
3 Rescue
Strategy: Start with Tomb and evolve into Gengar SF or Prime and get out Mr. Mime to make sure hurl into darkness works. Slowking is for disruption so you can keep those 4 trainers in their hand for Gengar SF or let them draw a useless pokemon for you to Hurl into Darkness.