Drain Daze is a harmful status effect that, through the distracting effects of a dance, causes HP to be absorbed when attacks connect with the character or enemy affected. The amount of HP drained is based upon the level of Drain Samba (1, 2, 3) used.
How to remove the effect
How the effect is inflicted
Drain amount varies between 1 and Drain cap where Cap = floor(mDelay*X/100) where mDelay is modified delay after haste, slow, etc.
See Drain Samba for further details.