I love making [off-meta] characters / builds based around an interesting item.
I found this War Scepter:
The idea is to put all points into the Defiance aura, then in Holy Shield (for which Defiance is a synergy granting an additional 20 x 15% = 300% defense).
Pair that with a 75% chance to block, and the Paladin should not be getting hit that often by melee attacks and ranged attacks (as opposed to spells which always hit?)