Blizzard has revealed three more cards that are part of the new Hearthstone expansion, Knights of the Frozen Throne. The new expansion will add over 135 frosty new cards, five of which have already been revealed.
As for the newest three, they are:
Deathrattle: Deal 5 damage to your minions.
Combo: Give a friendly minion Poisonous.
Destroy any Frozen minion damaged by this.