Get Goblin Rocket Luncher for that:) It's a great PVP "sniping" tool!:)
Haha I know what you mean, I'm also the proud owner of an arena-crazed orc warrior. But don't blame yourself for soaking those, its not always easy to LoS or Spell Reflect, though it is pretty nice to see a mage take a big chunk of his health due to stupidity.
Thundersnow
It's the job of every (dumb enough) Orc Warrior to soak up a Pyro while wielding that big fat 2-hander :)
Hell, I know I did it a bunch of times ... and it hurt :)