I found this after I read the post about turning into a dwarf with the dire brew.
The guy in the Grim Guzzler (BRD) on the bar there sells a drink called "Sulfuron Slammer".
When you drink this it gives you a debuff that does 4 dmg every 3 seconds.
If you drink this just before someone wants to sheep you it will break the sheep since its a 5 second debuff.
I've searched for Sulfuron Slammer but couldn't find anything so thought i'd post it.