Quote from nurgling13>>Next: Another dinosaur. How about a Stegodon this time?
You were supposed to make a Stegodon...
Oh, whoops. Posted mine a little too late, you can see on the other post I quoted a different person.
Nevertheless, thine wishes shall be granted.
Next: What I posted on the other post. (Any card with 'Also damages the minions next to whomever he attacks.')
Examples: Foe Reaper 4000, Magnataur Alpha, that's it.
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Personally I put in Chrommaggus due to its synergy with the warlock's hero power + it dodges bgh.
If you really want a 9 drop the obvious choices are Ysera or Nefarian (apart from Jaraxxus of course). Other choices would be Kel'Thuzad or Rag if you're feeling lucky.
Another card I really like is Bane of Doom, although it doesnt really fill the same role. Up to you i guess...