What is your favorite ultimate ability for that class?

I'm not saying that regular luck will negate absolute defense, but first, demons open the gates, and then they go into battle. And even if they face defeat, it's not always the case, because usually any hero already has a luck skill (Wide Gates are welcome). Thus, even if luck is low, the demons will win, as the summoned creatures will compensate for the low damage.
Absolute defense is only better in battles with neutrals.