I have a party of six level 12 characters. The party make up is a Paladin, an Archer Rogue, a Word Sorcerer, a Soulknife, an Inquisitor and a dodge tank made up of Ranger 9, Rogue 2, Monk 1. I am currently having trouble trying to find types of combats to challenge them. It is not enough of a challenge because the Paladin isn't even having to use smite evil in epic level CR combats for the party.
The paladin has a Cloak of minor displacement and a 34 Ac which make it incredibly hard to hit. The character is doing 25-30 per swing and that is without critically or using smite evil. So what I want to know is if anyone has suggestions on how to stop such a character. High AC, High Saves, Swift action self heals, Highest damage dealer in the party.
Currently I don't think it is a problem that is making the game not fun for the other players though it is hard to find combats that do any damage to the Paladin, Dodge Tank, or Soulknife. All of their ACs are over 30.
So my question is does anyone have some advice on how to challenge these characters without blasting the Rogue, Sorcerer, and Inquisitor into a million pieces?