Take a Necromancer Wizard, and give him the Command Undead Necromantic Feat, and he can rebuke and command undead as a cleric of half his character level, rounded down, and without any unholy symbol.
Only risk is that you must make a Necromantic Energy check every time you use it, DC 10, with caster level and Int bonus applying to your roll. If you fail, you gain a Negative Energy Side Effect such as Stench of Death or Animal Terror, which mark you as a Necromancer.
...All from Necromancy: Beyond the Grave, a Mongoose Publishing Encyclopedia Arcane sourcebook, now available in a collected volume.