Trait: Firm Conviction

Today I bought the Thaumaturge job-trait Firm Conviction, at a cost of 8000 guildpoints. The trait is potentially game-breaking and a must have!

It increases your defense while casting AND for a short duration after casting. Furthermore it stacks up to 4 times. 20%+20%+20%+20% for a total of 80% damage reduction.

Here is an example:
A mob hits you for 100 damage.
You cast Sacrifice and heal yourself up a bit. (The job-trait is applied)
The mob hits you again, but this time for 80 damage (20% reduction in damage)
You cast Sacrifice and heal yourself up a bit. (The job-trait is applied)
The mob hits you again, but this time for 60 damage (Another 20% reduction in damage)
You cast Sacrifice and heal yourself up a bit. (The job-trait is applied)
The mob hits you again, but this time for 40 damage (Another 20% reduction in damage)
You cast Sacrifice and heal yourself up a bit. (The job-trait is applied)
The mob hits you again, but this time for 20 damage (Another 20% reduction in damage)
At this point you have a damage reduction of 80% all physical attacks!
This is where you nod goodbye to the tank and AoE a few unclaimed mobs just to make your tanking a bit more interesting..