| Paladin of Baha-who? |
If you're under the effects of two spells or equipment that give the same type of bonus, they do not stack unless a special rule says that they do (e.g. the general rule that dodge bonuses always stack with other dodge bonuses). On the other hand, different types of bonuses do stack, unless a special rule says otherwise. So shield gives a shield bonus, and mage armor and leather armor both give armor bonuses. Shield and armor bonuses, being different types, stack. Maximizing AC in pathfinder is all about finding as many different types of armor bonuses that you can stack together, for the least amount of gp each.
| Matthew Downie |
Remember that Shield is a Personal spell so the wizard can't cast it on you. You could get it from Use Magic Device and a wand, or Major Magic talent, or a Cloak of the Hedge Wizard.