Quote Originally Posted by Kafeen View Post
It switches your current HP and MP values.

Use it after running low on MP to fill it back up.

Then try not to die because you have no HP.
Well basically I try to do this: Convert > Necrogenesis + Burst (To get a few more points of damage ) > Second Wind. I am typically back to full health assuming a WHM doesnt waste MP curing me thinking I took damage. (Call out those converts BLMs.)