Arx Key – Key to Lord Seru
You’ll first need to kill four mini-raid mobs in Sanctus Seru. They spawn on the top floor in the 4 inner temples in the middle of the zone. They each drop a “shard” to loot.
Praesertum Bikun = NW = Shard of the Shoulder
Praesertum Vantorus = SW = Shard of the Hand
Praesertum Rhugol = NE = Shard of the Eye
Praesertum Matpa = SE = Shard of the Heart
These mobs all cast a spell roughly every 5 seconds that punts and zones you (loading screen) to the “jail” part of the zone. You can out range this spell when pulling, but if you are too close or are fighting the mob, you’ll get punted.
The general strategy is to pull the mobs to the jail cell in which they punt you. You can see the jail location in the map below. This will allow you to continue fighting no matter how many times players get punted.
Additionally, Praesertum Matpa (gnome) gates, so be sure to mana burn him while fighting. I’d recommended having around 10 semi geared chars at level 65 due to how often they punt. More people would be required in Luclin Era.
Jail Punt Area:
Once you have looted all 4 shards head to Katta Castellum and find Elnerick Augustleaf. He’s closest to the Tenebrous Mountains side of the zone in a large castle.
Give him the 4 shards: Shard of the Shoulder, Shard of the Hand, Shard of the Eye, Shard of the Heart to receive Seal of Katta and Arx Key!!
Seal of Katta is used in the Sigil Earring of Veracity quest if you are working on that.