Dark Reign - Volkara's Bite

This is the first real raid you're going to be tasked with finishing for DoN progression. Don't worry though, it's extremely easy to do. Volkara is at the back end of the tunnel of the same zone you ran through for the Infested progression quest. She's an extremely easy fight and I usually just focus my DPS entirely onto her.

Though, if you're not level 100 and a class that does decent DPS you may want to pay attention to the Egg Sacs that she spawns throughout the event.

They don't have very much HP at all, but if you don't destroy the Egg Sacs they will spawn a bunch of little spiders which could quickly overwhelm a class with crappy DPS like a Cleric. Whatever your strategy is, after she is dead loot one of the Lava Spider Spinners that she drops. After you loot this return to the Dark Reign camp and turn it in for a character flag.