Hearthpwn

Dirty Rat nullifies the powerful battlecry effects of the Quest Rewards in Hunter, Druid, Priest, and Shaman. One of the ways to sort of counter these decks. 

The Quest Spells can be countered by Counterspell

Is there any other ways to counter the quests?

 100% way to counter is to quit hearthstone

And if Dirty Rat is played a lot, they can just...you know...finish quest AND play that minion on same turn.

 Incoming Brewmaster anti Rat meta?

Twitch error double post.

Potion of Polymorph would work to stop the quest reward minions with battlecry effects.

Quote from MightyKong >>

Potion of Polymorph would work on the reward minions with battlecry as well.

The rewards from the quest completion. NOT the minions for the quest.

Quote from Aradiel >>

Quote from MightyKong >>

Potion of Polymorph would work on the reward minions with battlecry as well.

 Pretty sure the battlecry goes off first, so while you do lose a powerful minion, you still get the battlecry.

It would work on the paladin quest though. Spend all that time going through five adapt choices, and then *poof* 1/1. Definitely don't play it into a mage secret.