Have:
4 Falkenrath Aristocrat
1 Ral Zarek
1 Bridge from Below
2 Chalice of the Void

Want:
(Listed in order of Priority of need)

3 Overgrown Tomb
4 Hallowed Fountain
4 Stomping Ground
4 Breeding Pool
4 Steam Vents
4 Watery Grave
2 Deathrite Shaman