They didn't quite fix the Kill command bug from PTR, but only seems to have.. changed? a bit, or however you want to describe it.
1. Get this spec. Ofcourse not all talents are needed for it, mostly the +dmg and kill command ones.
2. Get any pet that will increase your damage, or makes your enemy gain extra damage.
3. Get high crit (for the Killing Streak - Spell - World of Warcraft)
4. Go have fun in Battleground with insane high Kill commands.
Now, this obviously only applies if you got enough crits to maintain the + damage from step 4, and you will need decent gear to do enough damage. Screenshots will come as soon as my wow works decent again.