Hearthpwn

Jaraxxus is the definition of an anti-tempo, value card.

Some ideas

That 3/4 for 3 guy that copies secrets, now triggers opponents secrets as well.  Good for some secrets, others just fizzle.

This will possibly help in standard and wild tone down decks that rely on secrets.

All the posts get, 'the next watchpost you play gets +1/+1'

This restores these cool cards to playability but means they still will be a bit weak early giving aggro that bit of extra time it needs.

Caravans get tunnel weasel treatment. 

Caravans trade back and forth, right?  This gives them some extra utility and makes them very playable.

Tickatus: uncorrupted, 'play the opponents highest cost card.' Corrupted do the same for you.

The idea is to keep it an anti combo or control tool, but buff it by taking away the hate.  Uncorrupted it functions a lot like a superior dirty rat.  Making it strong vs. Combo.  Corrupted the idea is to have it play jaraxxus, making it strong vs. Control