Soul Link
Client records describe this reading. They do not confirm availability in gameplay.
Current client record
When active, 30% of all damage taken by the caster is taken by your Imp, Voidwalker, Succubus, Incubus, or Felhunter Demon instead. In addition, both the Demon and the master will inflict 3% more damage. Lasts as long as the Demon is active.
Sourced change history
No changes in the tracked log could be matched to this record. This does not mean the ability or item has never changed.