It only works on certain dungeons like Altar of Balance(Judgment) where there is continous damage. Just press X+X+Z and then you will get mana in no time..
CONFIRMED WORKING
UPDATE: I TESTED THIS ON FOREST OF LIFE.. THE BOSS PART, WHERE T RAINS. IT IS ALSO WORKING THERE
BENEFITS:
1. Easier clear of Dungeons
2. Spamming of Skills
PRESS THANKS IF I HELPED