This spell does not have a direct equivalent in vanilla.
Contagion
Level: 3
School: Necromancy
Sphere: Necromantic
Range: Short
Duration: 8 hours
Casting Time: 3
Area of Effect: 1 creature
Saving Throw: Poison negates
This spell causes a major disease and weakness in a creature. Every 2 rounds the afflicted individual must make a saving throw vs. poison at -2 or suffer additional -2 penalty to strength, dexterity, constitution, and charisma (up to -6 to all stats). The effects of this spell will persist until the creature receives a Cure Disease spell, or the spell duration expires.