Overcharged Centurion

The Overcharged Centurion is a centurion located on the Face of Oblivion outside Perdition Hold in the Maw during the Necrolord Assault. If Putting A Plan Together is one of the four active quests, players can enter the vehicle upon completion of the quest.

The centurion serves as a vehicle - hop in! It has three abilities:

While inside the vehicle, Mawsworn Caches show up on the minimap. Loot ten to earn the achievement Up For Grabs! They're generally on top of the walls, so use Purestep Ascension while the minimap says "Perdition Hold" to leap up top. One of the chests will contain a Quartered Ancient Ring for the Nilganihmaht's Stone Ring, itself a part of the Nilganihmaht Control Ring.

One of the caches will contain the Defense Map, which starts a quest: Clearing the Walls.