Spells that work well with "Share Spells"

[Teh_das]

After our ranger was nearly wiped because of an errant ogre mage, I've decided I need to become our party's tank. I've got a blink dog as my improved familiar, and I want to use Share Spells to the best effect.

Build so far:
Sorcerer 6/Spellthief 1
AFCs: Battle Sorcerer, Stalwart, Divine Sorcerer (Travel Domain, It's an awesome spell list and domain power)
Feats: Combat Caster, Improved Familiar, Master Spellthief

I'm definitely taking Abjurant Champion as my next few levels, but after that I've got no plans beyond a few decided spells (Celerity, Arcane Fusion). Thoughts?

[Fouredged Sword]

Haste, shield, mage armor, polymorph, alter self...