Drain Life

 strikes a single target with magical damage and absorbs some of that damage as HP. Damage and HP recovered is influenced by the caster's INT and base level. The success rate varies according to the skill level.

Patches

 * Patch (2018 Jun. 27)
 * Fixed an issue with the skill description not matching the actual effect of Drain Life and Marsh of Abyss.
 * Patch (2009 Nov. 04)
 * Increases the amount of HP recovery by affecting the caster's Base level.
 * HP absorption success rate increases due to the caster job level.