Oops (thats your problem now) DK

2 horn of winter (at 9 mana or 10)

play bonelord into both horn of winter into sylas to give them bonelord

have 3 or more frostwrym's fury in your hand by lady death whisper or dryscale deputy

kill bonelord easily with grimtotem bounty hunter

IF they are a board centered deck, you will watch as their board is frozen for 3 turns and they die from bonelord deathrattle.

the combo is made easier by the sheer amount of card draw, and the aggro makes your opponent play on the defense.