Hearthpwn

Quote from kloklon >>

Bonemare

why is such a stupid OP card a classic neutral? also i hate that it is played in almost every single class, even priest...

Knife Juggler  It drives me insane I must kill it immediately.

The scariest one for me that I hate to face is a turn 1 Northshire Cleric

Got to be Patches. 

Problems with Keleseth, Corridor Creeper, and the last three metas can all be traced back to this bastard. 

Quote from Nxzx >>

The scariest one for me that I hate to face is a turn 1 Northshire Cleric

Thoughtsteal

Drakonid Operative easily. It makes my blood boil just by thinking of this card. 

Keleseth or Patches 

Patches will always be the number one, even though I'm playing since vanilla. Also: Drakonid OP, Jade Idol, ship's cannon, Ice Block (I actually hate all of mages secrets, but Ice Block takes the cake), any card that discovers Mage spells.

Patches makes me roll my eyes cause its just so repetitive. Keleseth with Shadowstep is like gg all luck of the  draw no skill BUT Ice Block takes the cake as most annoying broken card cause it can give ur opponent 2 more turns while u cant do nothing no matter u play control or aggro. They built a deck that doesn't have survival chances so ice block nullifies it and god forbid to give them extra copies of ice block. Such a no skill thing tbh

Quote from Prudence94 >>

Coldlight Oracle and it's not even close.... Everytime I see someone playing the card I just concede on spot cause I know I'd get awfully pissed if I kept playing.... Seriously,Mill isn't a strategy! Get a real wincondition instead of burning mine.... 

My most hated card outside of Coldlight Oracle is prenerf Caverns The Below.  I broke a window playing that stupid quest.

Quote from DontDirtyMyRat >>

Quote from kloklon >>

Bonemare

why is such a stupid OP card a classic neutral? also i hate that it is played in almost every single class, even priest...

 It isn't classic though, it's Frozen Throne isn't it?

As for the OP, for me the card I hate most is the Dark Pact. When I come up against a warlock and see that destroy the lacky I just want to rage quit.

Patches. Unfun, everywhere.

Patches the Pirate

ice block

The Caverns Below. I insta-concede every time.

Coldlight Oracle but only because it is abused.Otherwise it should be ok.
Second to this, all the murlocs. Nothing hirritates me more then fighting against someone vomiting the whole hand of 1/1 and buff them at turn 3 for lethal.
Number 3 winner is Divine Favor. This card is a joke in all senses.Turn 10 you can have 5 left in your deck while the other still have 20 cards to draw. Nothing is more rewarding then this card to make you vomit all the 1/1 possible and redraw. It is disgusting.

Numer 4:Jade Idol. i am happy it will leave standard soon. It has been the most broken card since "that" expansion. For istance. I know geis,but this card alone allow the perfect excalation of jades in the first turns even if it is not shuffled. So during Aya turn will be most likely a gg.

There were so many, but I have to choose Jade Idol with pre-nerf Warsong Commander and Patches the Pirate being next.

Kazakus.  Brute-forced singleton decks when they were interesting/fringe decks previously while also essentially limiting them to three classes, stupid polarizing effect that just ends the game if drawn against certain decks.  Further compounded by the disconnect of designers thinking it's this great skillful card.