Angel+Oracle , going Nature and Battle Mysteries allows you to be quite powerful if built right(Nature's whispers and Scaled Fist). You can end up having astronomical AC, decent spell power due to Angel Spells and a combined spellbook, and if you're FULLY buffed, you're actually pretty good in combat too.

There's the satisfaction of absolutely blasting enemies with Storm of Justice, seeing massive damage, and your friends unhurt, then rampaging around slaughtering the remains, the occasionally dropping Wall of Light, or Bolt of Justice, or a Heal, or raising the dead...you're VERSATILE and strong...and can tank.

Get Greater Enduring Spells, and you're unstoppable.