Monster set: Ilambris (medium/heavy)
Head Drops from Vet Crypt of Hearts 1
Sholders Drop from Gilirion the Redbeard's chest

Set bonus
(1 item) Adds 1096 Maximum Magicka
(2 items) When you deal Flame or Shock Damage, you have a 10% chance to summon a meteor shower of that damage type that deals 1170 Damage to all enemies within 4 meters every 1 second for 5 seconds. Each effect can occur once every 8 seconds.

Armor or Weapons+Jewelry: Julianos set

The Law of Julianos set is part of the Orsinium DLC. The crafting station is located in Wrothgar (Boreal Forge). You can craft any armor, weapon or jewelry of this set in any motif style you know, as long as you have 6 traits researched (per item). You can trade crafted pieces to other players. Each set item becomes bound on equip.

Set bonus
(2 items) Adds 833 Spell Critical
(3 items) Adds 1096 Maximum Magicka
(4 items) Adds 833 Spell Critical
(5 items) Adds 299 Spell Damage

Name: Netch's Touch
Type: Dungeon
Location: Darkshade Caverns I, Darkshade Caverns II
Style: Barbaric

Set bonus
(2 items) Adds 833 Spell Critical
(3 items) Adds 1096 Maximum Magicka
(4 items) Adds 129 Spell Damage
(5 items) Adds 400 Spell Damage to your Shock Damage abilities.