[Taqwus]

Hellbind Heart acts like charm, but if memory serves as longer range. Both are useful on assassins (amusingly, Pan has the right components for both -- give a Black Heart to a Pan or Pandemoniac, as they're stealthy mages with the right paths. Might require boosting items, don't recall.) In both cases items, spell power, commander status are retained.
There are also spells aimed specifically at capturing magical or undead units.