Life Siphon

[Infinatex]

Life Siphon 75 cards, 15 sideboard 3 {Glacial Fortress} 2 {Swamp} 2 {Island} 2 {Nephalia Drownyard} 2 {Isolated Chapel} 4 {Watery Grave} 2 {Godless Shrine} 4 {Hallowed Fountain} 3 {Plains} 24 lands 2 {Vampire Nighthawk} 3 {Drogskol Reaver} 3 {Vizkopa Guildmage} 2 {Obzedat, Ghost Council} 2 {Angel of Serenity} 2 {Fog Bank} 2 {Duskmantle Guildmage} 16 creatures 3 {Chalice of Life} 2 {Dimir Charm} 3 {Supreme Verdict} 2 {Increasing Confusion} 1 {Sorin, Lord of Innistrad} 1 {Tamiyo, the Moon Sage} 2 {Azorius Charm} 2 {Unburial Rites} 4 {Exquisite Blood} 20 other spells Sideboard 2 {Unburial Rites} 1 {Sepulchral Primordial} 1 {Lord of the Void} 2 {Evil Twin} 1 {Jace, Architect of Thought} 2 {Craterhoof Behemoth} 1 {Gideon, Champion of Justice} 1 {Griselbrand} 2 {Merciless Eviction} 1 {Heartless Summoning} 1 {Tyrant of Discord} 15 sideboard cards

[Wally]

Try swapping out  {Unburial Rites} for  {Essence Harvest} and see how you go. I think it would suit this deck a little better.