MP 47
Effect Steals an enemy's HP and one beneficial status effect. Ineffective against undead.
Duration Instantaneous
Casting Time 4 seconds
Recast Time 90 seconds
Magic Type Magical
Element ??
Jobs BLU 84

Osmosis is a Blue Magic spell in Final Fantasy XI. It drains the HP and one status effect from a target. It costs five Blue Magic Points to set and increases MND by three while decreasing CHR by two. It can be equipped with Magnetite Cloud or Ice Break to create the job trait Magic Defense Bonus.


Osmosis is the spontaneous net movement of solvent molecules through a semi-permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides. It may also be used to describe a physical process in which any solvent moves across a semipermeable membrane (permeable to the solvent, but not the solute) separating two solutions of different concentrations.