My favorite 500 point DC army is still
DCs x4
Warhulk
Nerak
Bacon
500/17
The key is aggression, aggression, aggression! Raelin gets a couple OMs here and there to improve her positoning, but generally everything goes on the DCs. I've found that Nerak's bump for them from 2 to 3 Defense is huge, and you can get them to 5+ when the auras are doubled up, and if you can grab height or Gerda. I love the Warhulk as their Taskmaster-with 8 life he has amazing survivability, and a 50% chance to throw 5 attack dice at everyone adjacent to a double-hex figure is just awesome
(just be careful about where your figures are!)