ThisStep 1) Reroll mage, rogue or warlock, these are your safe bet since blizzard will never ever let any of these class be at the bottom of the sims.
Step 2) Learn how to leech dps and cheese mechanics AKA know your shit.
Step 3) laugh all your way to your garrison with all the loot.
Bonus step 3) Try to get priority in the loot if your guild use council loot, be friend with all your officers and talk about theorycrafting in raid and about how this 4P and X trinket will increase your dps and how much this will help your raid, know other class bis and what trinkets they use, if you see a priest disc rolling or asking for the class trinket go and say how according to X theorycrafter and logs, priest disc arent using that trinket.
+hunter to the first part