hello, this is my idea of discard deck, but it seems it need some help... i would appreciate each proposal to improve this deck 
Lands
11 [SHM] Island
1 [TSP] Dreadship Reef
1 [WWK] Creeping Tar Pit
1 [M10] Drowned Catacomb
1 [SHM] Sunken Ruins
1 [ZEN] Jwar Isle Refuge
1 [WWK] Halimar Depths
1 [FUT] Tolaria West
1 [WWK] Bojuka Bog
1 [PLC] Urborg, Tomb of Yawgmoth
14 [M12] Swamp
Creatures
1 [RAV] Drift of Phantasms
1 [RAV] Dimir House Guard
1 [MBS] Blightsteel Colossus
1 [M12] Jace's Archivist
1 [NPH] Phyrexian Metamorph
1 [TSP] Vesuvan Shapeshifter
1 [TSP] Dralnu, Lich Lord
1 [9E] Hypnotic Specter
1 [M12] Rune-Scarred Demon
Spells
1 [VI] Corrosion
1 [TSP] Ancestral Vision
1 [TO] Insidious Dreams
1 [SC] Long-Term Plans
1 [RAV] Muddle the Mixture
1 [RAV] Brainspoil
1 [SC] Parallel Thoughts
1 [8E] Inspiration
1 [M11] Liliana's Caress
1 [SOM] Painful Quandary
1 [CHK] Honden of Seeing Winds
1 [CHK] Honden of Night's Reach
1 [10E] Megrim
1 [M11] Leyline of the Void
1 [M11] Leyline of Anticipation
1 [MBS] Horrifying Revelation
1 [DDC] Demonic Tutor
1 [M10] Mind Shatter
1 [ZEN] Khalni Gem
1 [M12] Manalith
1 [UL] Opportunity
1 [MR] Gilded Lotus
1 [DS] Darksteel Ingot
1 [RAV] Spectral Searchlight
1 [FUT] Coalition Relic
1 [CHK] Sensei's Divining Top
1 [DS] Mycosynth Lattice
1 [DS] Panoptic Mirror
1 [ISD] Tribute to Hunger
1 [PS] Noxious Vapors
1 [SOM] Psychic Miasma
1 [NPH] Karn Liberated
1 [M11] Liliana Vess
1 [MBS] Go for the Throat
1 [10E] Cruel Edict
1 [DPA] Terror
1 [M10] Doom Blade
1 [M10] Mind Rot
1 [ON] Blackmail
1 [ROE] Inquisition of Kozilek
1 [PT] Mind Knives
1 [MM] Specter's Wail
1 [FD] Night's Whisper
1 [RAV] Sins of the Past
1 [TO] Deep Analysis
1 [US] Windfall
1 [M12] Monomania
1 [AT] Hymn to Tourach
1 [M11] Call to Mind
1 [M12] Distress
1 [M12] Diabolic Tutor
1 [MR] Wrench Mind
1 [US] Persecute
1 [TE] Coercion
1 [PT] Cruel Tutor
1 [US] Duress
1 [MI] Stupor
Lands
11 [SHM] Island
1 [TSP] Dreadship Reef
1 [WWK] Creeping Tar Pit
1 [M10] Drowned Catacomb
1 [SHM] Sunken Ruins
1 [ZEN] Jwar Isle Refuge
1 [WWK] Halimar Depths
1 [FUT] Tolaria West
1 [WWK] Bojuka Bog
1 [PLC] Urborg, Tomb of Yawgmoth
14 [M12] Swamp
Creatures
1 [RAV] Drift of Phantasms
1 [RAV] Dimir House Guard
1 [MBS] Blightsteel Colossus
1 [M12] Jace's Archivist
1 [NPH] Phyrexian Metamorph
1 [TSP] Vesuvan Shapeshifter
1 [TSP] Dralnu, Lich Lord
1 [9E] Hypnotic Specter
1 [M12] Rune-Scarred Demon
Spells
1 [VI] Corrosion
1 [TSP] Ancestral Vision
1 [TO] Insidious Dreams
1 [SC] Long-Term Plans
1 [RAV] Muddle the Mixture
1 [RAV] Brainspoil
1 [SC] Parallel Thoughts
1 [8E] Inspiration
1 [M11] Liliana's Caress
1 [SOM] Painful Quandary
1 [CHK] Honden of Seeing Winds
1 [CHK] Honden of Night's Reach
1 [10E] Megrim
1 [M11] Leyline of the Void
1 [M11] Leyline of Anticipation
1 [MBS] Horrifying Revelation
1 [DDC] Demonic Tutor
1 [M10] Mind Shatter
1 [ZEN] Khalni Gem
1 [M12] Manalith
1 [UL] Opportunity
1 [MR] Gilded Lotus
1 [DS] Darksteel Ingot
1 [RAV] Spectral Searchlight
1 [FUT] Coalition Relic
1 [CHK] Sensei's Divining Top
1 [DS] Mycosynth Lattice
1 [DS] Panoptic Mirror
1 [ISD] Tribute to Hunger
1 [PS] Noxious Vapors
1 [SOM] Psychic Miasma
1 [NPH] Karn Liberated
1 [M11] Liliana Vess
1 [MBS] Go for the Throat
1 [10E] Cruel Edict
1 [DPA] Terror
1 [M10] Doom Blade
1 [M10] Mind Rot
1 [ON] Blackmail
1 [ROE] Inquisition of Kozilek
1 [PT] Mind Knives
1 [MM] Specter's Wail
1 [FD] Night's Whisper
1 [RAV] Sins of the Past
1 [TO] Deep Analysis
1 [US] Windfall
1 [M12] Monomania
1 [AT] Hymn to Tourach
1 [M11] Call to Mind
1 [M12] Distress
1 [M12] Diabolic Tutor
1 [MR] Wrench Mind
1 [US] Persecute
1 [TE] Coercion
1 [PT] Cruel Tutor
1 [US] Duress
1 [MI] Stupor