Imbue With Addiction

Transmutation
Level: Alchemist* 2, Artificer * 3, Sorcerer */Wizard * 3, Warlock * 3
Components: V, S, M (a dose of an addictive drug or substance)
Casting Time: 1 Standard Action
Range: touch
Target: one living creature
Duration: instantaneous
Saving Throw: Fortitude negates
Spell Resistance: yes

The target immediately becomes addicted to the drug used as the material component during the casting of the spell. If the target was ever addicted to the drug at any point in the past, it takes a -4 penalty on its saving throw.