Hearthpwn

SoU - Saviors of Uldum
Bloodsworn Mercenary * - Staple in aggro warrior.
Livewire Lance * - Staple in aggro warrior, playable in any tempo-based warrior deck.
Psychopomp * - Staple in combo priest, good winrate so far.
Tip the Scales - Buildaround in murloc paladin, very good winrate.

 – Rise of Shadows
Omega Devastator - Staple in control warrior, very good winrate.

 – Rastakhan’s Rumble
Masked Contender # – Staple in secret hunter, playable in any secret deck.

 – The Boomsday Project
Prismatic Lens – Staple in murloc paladin, playable in Holy Wrath Paladin.
Supercollider # – Staple in control warrior, very good winrate.

 – The Witchwood
Rat Trap # - Staple in secret and highlander hunter, great winrate.
Town Crier - Staple in any warrior deck with very solid winrate.

 - Classic
Brawl - Staple in most warrior decks with good winrate.
Doomsayer# - Playable in any control deck, especially for mage.
Murloc Warleader - Staple in murloc paladin and shaman, good winrate.
Sea Giant - Often played in zoolock and token druid, decent winrate.
Shield Slam - Staple in control warrior, good winrate.
Snake Trap # - Staple in highlander and secret hunter, good winrate.

SoU - Saviors of Uldum
Anubisath Defender - Staple in quest druid.
Crystal Merchant - Staple in quest druid, decent winrate.
Diseased Vulture - Staple in zoolock, good winrate.
Micro Mummy - Staple in quest paladin with good winrate so far.
Vulpera Scoundrel # - Staple in highlander decks, playable in quest shaman.

 – Rise of Shadows
Magic Carpet - Staple in zoolock and hand paladin, decent winrate.
Waggle Pick - Often played in tempo rogue, good winrate.
Wrenchcalibur - Staple in bomb warrior, playable in quest warrior.

 – Rastakhan’s Rumble
Master's Call - Staple in midrange beast hunter, worse winrate in SoU meta.

 – The Boomsday Project
Augmented Elekk - Staple in bomb warrior and playable in quest warlock.
Crystallizer - Staple in zoolock.
Thunderhead – Staple in aggro shaman and playable in murloc shaman.

 – The Witchwood
Arcane Keysmith # - Often played in highlander mage, worse winrate in SoU.
Nightmare Amalgam - Versatile card which sees play in various tribal decks.
Sandbinder # - Often played in highlander decks as a reliable tutor of Zephyrs the Great.

 - Classic
Doomhammer – Staple in aggro overload shaman, low playrate but good winrate.
Hungry Crab # - Murloc tech is strong in the current meta.
Mountain Giant * - Staple in highlander mage, hurt by recent mage nerfs.
Pyroblast #- Staple in big spell mage, affected by recent nerfs.

SoU - Saviors of Uldum
Plague of Death - Playable in any slower priest deck, such as wall and quest priest.
Plague of Murlocs # -  Playable in control and quest shaman, decent winrate.
Puzzle Box of Yogg-Saron #* - Staple in highlander mage, hurt by recent nerfs.
Scarlet Webweaver # - Playable in midrange beast and highlander hunter, combo potential.
Tortollan Pilgrim #* - Playable in highlander and big spell mage, affected by recent nerfs.
Wild Bloodstinger # - Playable in highlander hunter, also a tech option vs combo decks.

 – Rise of Shadows
Crystalsong Portal - Playable in token druid, sees little play.
Nine Lives - Playable in highlander and mech hunter.
Power of Creation #* - Hurt by recent mage nerfs.

 – Rastakhan’s Rumble
Crowd Roaster - Playable in dragon decks, especially for mage.
Haunting Visions * – Often played in aggro shaman, mediocre winrate after nerf patch.
Sul'thraze # - Staple in quest warrior with decent winrate, playable in tempo warrior.

 – The Boomsday Project
Astromancer #* - Playable in highlander and freeze mage.
Dreampetal Florist - Staple in Malygos quest druid, mediocre winrate.
Glowstone Technician - Staple in mechrattle paladin, worse winrate in SoU meta.
Necromechanic # - Playable in highlander and mech hunter, decent winrate.

 – The Witchwood
Baleful Banker #  - Staple in Holy Wrath Paladin.
Book of Specters - Staple in dragon mage, sees modest play.
Mossy Horror # - Tech card vs swarm decks, playable in highlander decks.
Voodoo Doll #* - Often played in highlander mage and questlock, lower winrate after nerfs.
Wispering Woods – Playable in token druid, good winrate but low playrate.

 - Classic
Ancient of War # - Playable in quest druid, decent winrate.
Big Game Hunter # - Tech option for control warrior, low playrate.
Faceless Manipulator # - Playable in Malygos quest druid.
Force of Nature - Tech option for token druid.
Preparation - Playable in tempo and quest rogue, affected heavily by rogue nerfs.
Twisting Nether # – Staple in slower warlock decks which struggle in the current meta.

SoU - Saviors of Uldum
Blatant Decoy - Staple in big paladin and shaman, low winrate currently.
Body Wrapper - Low winrate, but possible option in fatigue decks in the future.
History Buff - Interesting effect, playable in tempo and zoo decks.
Riftcleaver - Strong card, but slower warlock decks lack healing to become more viable.
Splitting Axe - Lacks synergy, but has potential if more totem synergies are printed.

 – Rise of Shadows
Batterhead - Sees fringe play in big and resurrect decks.
Big Bad Archmage - Niche card for big shaman.
Crystal Stag - Playable in heal druid but very low winrate.
Duel! - Staple in big paladin which gained some synergies in SoU.
Hench-Clan Hag - Niche card for tribal and zoo decks, such as murloc shaman.
Jumbo Imp - Staple in zoolock running imp package, low winrate.
Lazul's Scheme - Playable in miracle priest, very low winrate.
Mana Cyclone * - Cyclone mage has much worse winrate in post-patch meta.
Muckmorpher - Staple in big shaman which is a niche deck in the current meta.
Unseen Saboteur - Niche tech card against spell heavy decks.
Witch's Brew - Sees play in big and control shaman, low winrate.

 – Rastakhan’s Rumble
A New Challenger... - Niche card for highlander paladin.
Big Bad Voodoo - Sees fringe play in slower shaman decks.
Blast Wave – Playable in highlander mage, mediocre winrate.
Mosh'Ogg Announcer - Struggles to find a home in the current meta.
Smolderthorn Lancer - Playable in dragon warrior which is a niche deck.
Soulwarden - Playable in handlock, very low winrate.
Splitting Image - Playable in secret mage, sees little play.
Treespeaker - Niche card for druid decks with treant synergy.

 – The Boomsday Project
Academic Espionage - Niche card for thief rogue, low winrate.
Juicy Psychmelon – Does not have any home in the current meta, but has niche potential in the future.
Omega Agent - Playable in handlock which has very low winrate.
Seaforium Bomber * - Niche card for bomb warrior and quest shaman.
Unexpected Results - Sees fringe play in cyclone mage.
Weaponized Pinata - Low winrate but a niche card for mech decks.

 – The Witchwood
Hidden Wisdom - Playable in mech paladin but low playrate.
Spectral Cutlass - Low winrate, anti-synergy with Bazaar Burglary.
Vivid Nightmare - Struggles to find a home in the current meta but has OTK potential.
Witch's Cauldron – Playable in zoo and swarm decks but low playrate.

 - Classic
Ancient of Lore - Playable in heal and quest druid, low winrate.
Avenging Wrath - Playable in spell paladin running King Phaoris, low winrate.
Cabal Shadow Priest - Struggles to find a home in the current meta.
Far Sight - Playable in slower shaman decks which struggle in the current meta.
Gladiator's Longbow - Sees very little play but playable in slower hunter decks.
Gorehowl - Niche card for minion-heavy warrior decks.
Lay on Hands - Staple in spell paladin, low winrate.
Southsea Captain - Playable in pirate rogue which has low winrate in SoU.
Spellbender - Playable in secret mage, low winrate.
Sword of Justice - Slow card which lacks synergy.

SoU - Saviors of Uldum
Desert Obelisk - This is a card for casual mode, not recommended on ladder.
Dwarven Archaeologist - Meme card, effect difficult to make good use of.
Mischief Maker - Possible tech card vs decks going on fatigue but very low winrate.
Mogu Cultist - Mogu decks have terrible winrates.
Mortuary Machine - Meme card, often a worse Fel Reaver.
Shadow of Death - Combo rogue fell flat in this expansion.
Whirlkick Master - Slow card, effect difficult to make use of.

 – Rise of Shadows
Arcane Fletcher - Has meme potential in midrange hunter.
Azerite Elemental - Meme card.
Darkest Hour - Meme card in Standard.
Dragon Speaker - Effect difficult to make good use of, even in dragon decks.
Portal Overfiend - Weak card for Plot Twist Warlock.
Shadowy Figure - Deathrattle priest lacks synergy to become viable in Standard.
Unidentified Contract - Outclassed by cheaper removal options, such as Sap.
Whirlwind Tempest - Meme card, playable in experimental big shaman decks.

 – Rastakhan’s Rumble
Auchenai Phantasm - Meme card.
Cannon Barrage - Slow card, effect difficult to make good use of.
Drakkari Trickster – Very unreliable card, possible tech against Kingsbane in Wild.
Gurubashi Hypemon – Too expensive, effect difficult to make use of.
Gurubashi Offering - A liability.
Ice Cream Peddler - Meme card.
Immortal Prelate – Buildaround in buff paladin, very low winrate.
Linecracker - Staple in meme BEEEES!!! OTK deck.
Snapjaw Shellfighter - Interesting meme card, useless in the current meta.
Stampeding Roar - Has meme potential in big beast druid.
Surrender to Madness - Synergy with Spirit of the Dead, very low winrate.
The Beast Within - Meme card for beast decks.
Untamed Beastmaster - Unreliable meme card for beast decks.
Void Contract - Expensive tech card vs combo decks, useless in the current meta.

 – The Boomsday Project
Beryllium Nullifier – Does not have an use in any constructed deck.
Cathedral Gargoyle - Dragon paladin lacks synergy to become relevant.
Ectomancy - Meme card for demon decks.
E.M.P. Operative - Extremely situational tech card.
Goblin Prank - Meme card .
Holomancer - Does anyone know any use for this card?
Loose Specimen - A liability but has strong synergy with Gahz'rilla in Wild.
Necrium Vial - Expensive card for deathrattle rogue, very low winrate.
Omega Defender - Meme card.
Power Word: Replicate - Meme card, has seen play in Test Subject OTK decks.
Reckless Experimenter - Meme card for deathrattle decks which lack synergy.
Star Aligner - Meme card.

 – The Witchwood
Bogshaper - Playable in elemental shaman, very low winrate.
Deadly Arsenal - Synergy card which lacks support, very low winrate.
Deathweb Spider – Slow card, effect difficult to make use of.
Muck Hunter - Outclassed by better 5 mana options.
Ratcatcher - Meme card.
Splitting Festeroot - Extremely slow card.
Totem Cruncher - A liability.
Toxmonger - Very low winrates, staple in quest hunter in Wild.
WANTED! - Overpriced card, outclassed by better removal options.
Worgen Abomination - Meme card, effect difficult to make use of.

 - Classic
Bane of Doom - Very unreliable card, low winrate.
Barrens Stablehand - Meme card.
Bestial Wrath - Meme card.
Blood Knight - Niche tech card, useless in the current meta.
Earth Elemental - Playable in heavy-overload decks, very low winrate.
Kidnapper - Overpriced card, outclassed by better removal options.
Icicle - Often a worse Frostbolt, meme card.
Mindgames - Meme card, playable in fun steal decks.
Patient Assassin - Outclassed by better removal options for rogue.
Pit Lord - Playable in demonlock, very low play and winrate.
Shadowform – Often a liability, meme card.

 Standard ranking change log for Year of the Dragon:

For details on how Standard will rotate, check out this thread!

 - Classic (Wild ranking)
Murloc Warleader - Staple in murloc shaman, very good winrate.

 – Kobolds & Catacombs
Branching Paths  - Very flexible card, staple in most druid 

 – Knights of the Frozen Throne
Ultimate Infestation - Staple in jade druid, also sees play in ramp druid.

 – Journey to Un’Goro
Gentle Megasaur – Finisher in murloc decks, very good winrate in shaman.
Shadow Visions  - Staple in several priest decks, especially control.
Vilespine Slayer * - Staple in odd rogue, playable in any rogue deck.

 – Mean Streets of the Gadgetzan
Dirty Rat # - Strong tech card against combo and OTK decks.

 – Goblins & Gnomes
Lightbomb # - Staple in many priest decks, good winrate.

 – Hall of Fame
Ice Block #* - Staple in control and secret mage, very good winrate.

 – Rise of Shadows (Wild ranking)
Crystalsong Portal - Playable in token and aggro druid, good winrate.
Magic Carpet - Staple in zoolock, better winrate in Wild.
Waggle Pick - Often played in tempo rogue, above-par winrate.

 – Rastakhan’s Rumble (Wild ranking)
Master's Call - Often played in midrange and beast hunter, good winrate.

 – The Witchwood (Wild ranking)
Wispering Woods – Strong card in token druid with relatively low playrate.

 - Classic (Wild ranking)
Brawl - Playable in various warrior decks, decent winrate.
Doomsayer - Playable in any control and reno deck.

 – Kobolds & Catacombs
Arcane Tyrant - Often played in big spell and reno mage, good winrate currently.
Call to Arms - Staple in murloc and giant paladin; strong card in any aggro deck.
Corridor Creeper - Nerfed hard but still sees play in odd paladin and evolve shaman.
Psychic Scream * - Very strong card, even though priest is not in its strongest period currently.
Voidlord - Staple in most warlock decks, including reno and cubelock.

 – Knights of the Frozen Throne
Corpsetaker - Often played in even shaman, playable in other even decks.
Nerubian Unraveler – Staple in Darkest Hour Warlock, decent winrate.
Skulking Geist #* - Tech vs jade druid which is popular in the current meta.
Treachery * – Staple in treachery warlock, playable in Mecha'thun warlock.

 – Journey to Un’Goro
Bloodbloom * - Staple in Mecha'thun and Darkest Hour Warlock.
Charged Devilsaur - Often played in Darkest Hour Warlock, good winrate.
Gluttonous Ooze #* - Strong tech card, sees regular play in control and highlander decks.
Living Mana – Often played in token druid, good winrate so far.
Primordial Glyph - Staple in tempo mage; playable in a variety of decks.

 – Whispers of the Old Gods
Faceless Shambler - Sees regular play in evenlock, good winrate.
Vilefin Inquisitor – Strong card in murloc paladin but low playrate.

 – Goblins & Gnomes
Quartermaster * - Staple in odd paladin.
Siltfin Spiritwalker - Often played in murloc shaman, big rise in winrate.

 – Hall of Fame
Molten Giant – Often played in evenlock and heal paladin, strong synergy with High Priest Thekal.

 – Rise of Shadows (Wild ranking)
Darkest Hour * - Staple in Darkest Hour Warlock.
Omega Devastator - Playable in control warrior.

 – The Boomsday Project (Wild ranking)
Juicy Psychmelon - Playable in togwaggle druid, mediocre winrate.

 - Classic (Wild ranking)
Faceless Manipulator # - Sees play in reno and handlock, playable in any control deck.
Force of Nature - Playable in token druid but low playrate.

 – Kobolds & Catacombs
Carnivorous Cube # - Staple in cubelock and deathrattle hunter.
Cataclysm # - Staple in Mecha'thun Warlock.
Dragon's Fury – Playable in reno and control mage, reasonable winrate.
Reckless Flurry * - Playable in odd warrior, worse winrate in SoU.
Spiteful Summoner - Build-around card, playable in druid and priest decks.
To My Side! - Staple in spell hunter which sees little play in the current meta.
Twilight Acolyte * - Staple in dragon priest which has low playrate currently.
Unstable Evolution # - Playable in evolve shaman.
Void Ripper # - Playable in odd paladin and rogue but low playrate.

 – Knights of the Frozen Throne
Gnomeferatu # - Tech card vs combo decks, currently sees play in renolock.
Obsidian Statue * – Staple in big priest which has lower winrate currently.
Simulacrum # – Decent winrate and staple in exodia mage running Emperor Thaurissan.

 – Journey to Un’Goro
Bittertide Hydra – Sees little play but playable in aggressive decks.
Meteor # – Playable in reno and big-spell mage.

 – Mean Streets of the Gadgetzan
Dragonfire Potion #* - Decent winrate, playable in any priest deck.
Kabal Trafficker # - Playable in renolock, good winrate but low playrate.
Rat Pack – Playable in beast hunter, used to be staple in many hunter decks.
Sleep with the Fishes #* - Playable in control and fatigue warrior.
Small-Time Recruits - Playable in murloc paladin, rise in winrate.
 – One Night in Karazhan
Arcane Giant – Playable in cyclone mage, low playrate in SoU wild meta.
 – Whispers of the Old Gods
Cabalist's Tome # - Slow card but playable in exodia mage, has also seen play in control mage.
Call of the Wild # - Sees some play in spell hunter, decent winrate.
DOOM! # – Playable in reno and Mecha'thun Warlock.
 – The Grand Tournament
Mulch – Mediocre winrate but a hard removal option for druid.
Mysterious Challenger - Staple in secret paladin, good winrate but low playrate.
Twilight Guardian - Sees some play in dragon priest, decent winrate.
 – Goblins & Gnomes
Enhance-o Mechano - Playable in mech and swarm decks, big rise in winrate.
Feign Death #- Playable in deathrattle hunter, mediocre winrate.
Fel Reaver # - Sees play in mech hunter with good winrate, playable in any aggressive deck.
Hobgoblin - Sees play in zoolock, big rise in winrate.

 – Hall of Fame

 – Kobolds & Catacombs
Crushing Walls - Playable in spell hunter, low winrate.
Dragonhatcher - Has seen play in big and taunt druid.
Evasion – Playable in mill and Malygosrogue, low winrate.
Fal'dorei Strider - Fell flat after recent rogue nerfs, sees little play.
Grand Archivist - Playable in Spiteful Summoner decks, very low playrate.

 – Knights of the Frozen Throne
Blackguard - Sees little play, outclassed in heal paladin.
Bring It On! - Sees some play in fatigue warrior, low winrate.
Dead Man's Hand – Playable in fatigue and recruit warrior, low winrate.
Doomerang - Hurt by recent rogue nerfs, sees very little play.
Drakkari Enchanter - Sees some play in big druid, synergy with Emperor Thaurissan.
Fatespinner - Niche card for token druid, low winrate.
Meat Wagon - Sees some play in mech deathrattle paladin, okay winrate.
Rattling Rascal - A liability but has strong synergy with Evolve.
Snowfury Giant – Playable in heavy overload decks.

 – Journey to Un’Goro
Blazecaller – Playable in elemental decks which are fringe in the current meta.
Bright-Eyed Scout * - Sees very little play but has niche potential in big spell mage.
Chittering Tunneler - Sees very little play but decent winrate.
Curious Glimmerroot * – Niche card for reno priest, mediocre winrate.
Dinosize – Situational card which sees some play in even paladin.
Giant Anaconda – Playable in Mecha'thun Druid, low winrate.
Primordial Drake *- Playable in dragon and control decks, very low playrate.
Stone Sentinel - Playable in elemental shaman, low winrate.

 – Mean Streets of the Gadgetzan
Fight Promoter - Playable in hand-buff decks, low winrate.
Mana Geode – Sees very little play but playable in proactive priest decks.
Manic Soulcaster - Playable in reno and control mage, low play and winrate.

 – Whispers of the Old Gods
Eternal Sentinel - Playable in overload aggro shaman, low winrate.
Forbidden Healing - Tech option for heal paladin.
Giant Sand Worm - Sees very little play but a niche card for recruit hunter.
Wisps of the Old Gods – Low playrate but playable in token druid.

 – The Grand Tournament
Arcane Blast - Low winrate, has seen play in burn mage.
Beneath the Grounds - Tech option for mill decks, low winrate.
Coldarra Drake - Sees little play but playable in inspire decks.
Elemental Destruction - Playable in control shaman, low winrate.
Garrison Commander - Playable in even shaman, very low playrate.

 – Goblins & Gnomes
Ancestor's Call – Staple in Malygos and big shaman, which are niche archetypes.
Clockwork Giant - Tech card vs control decks, very low playrate.
Crush - Low win and playrate but playable in slower warrior decks.
Demonheart – Sees very little play but playable in demon decks.
Piloted Sky Golem - Playable in midrange decks, decent winrate but low playrate.

Wild ranking change log for Year of the Dragon:

References

The list has been assembled using data from:

• hsreplay.net,
• hearthstone.gamepedia.com,
• vicioussyndicate.com and
• icy-veins.com

Special Thanks To

• SlydE,
• Chimera,
• LightBrain and

all users who have made suggestions to keep the guide updated!