Shadow Knight Kael Drakkel Armor (Velious Raid Armor)
For the Shadow Knight Kael Drakkel Armor you'll need to collect Ancient Tarnished Plate from the Temple of Veeshan as well as 3 specific gems off different Velious enemies. After you've done that you'll need to bring it to Veldern Blackhammer in Kael Drakkel. You'll need Ally faction with the Kromzek in order to do these turn ins.
You can find the NPC you're looking for in the southern most portion of Kael Drakkel - in a room south of where King Tormax can be found. If you still need some directions to this location I recommend you use my map below for guidance.
Below you'll find a list of all the different Kael Drakkel Armor turn ins that you can do as a Shadow Knight. Also don't forget that these quests can be MQ (Multi Quested) as well! What I mean by that is, if your friend has one of the unmade pieces of armor he can turn that item into the NPC then you turn in just the gems and you'll get the completed reward.
This works differently depending on the server you play on. Those on the official Daybreak servers will have to be the same class as the person who is helping you MQ the armor. On the EQ emulator P99 any class can help you complete the multiquest.
Malevolent Breastplate
Malevolent Boots
Malevolent Bracer
Malevolent Gauntlets
Malevolent Greaves
Malevolent Crown
Malevolent Vambraces