Once you start getting a decent gearset, work on a dedicated blockset.
its UBER for 5man heroics.
My blockset is 41.7% unbuffed block, 2.6k block, 3k with libram up, 3.4k with lavanthors trinket up too - and that lasts a whopping 40seconds.
My Disc priest GF healer can keep alive with bubbles & renews.
Once, some time ago now, i did 10man Naxx. (with a far less uber blockset compared to now).
On lotheb was tanking and i took 11% of total party damage. Most others were in the 9-10% range.
Thats the power of a blockset.
That, and 7-8k SoR crits
