With Thunderfury / Corrupted Stormshield and Nephalem Amulet.
You can make a great Zeal/Holy Shock Paladin, the Aura is strong enough to take out Hell Cows 1-2 shots.
Probably the best option for an Auradin but quite expensive.


Edit: Might also need Dream Helm to make the Aura strong enough to take out Hell Cows.
But the Zeal will do over 100k Damage which can kill pretty much anything in the game.