Its a light armor set that drops in Arx Corinium:
(2 items) Adds 1096 Maximum Magicka
(3 items) Adds 129 Magicka Recovery
(4 items) Adds 1096 Maximum Magicka
(5 items) When you use an Ultimate ability, you heal you and your allies within 20 meters of you for 30 Health per point of the Ultimate's cost.
On top of that, it drops in Divine, Infused, and Impenetrable like crazy. Has the feeling of one of those "too good to be true" sets that is easy to farm for PVE and PVP. I've seen some threads where this was used by MagDKs in PVP a few years ago, but nothing more.
Seems like this has some utility, possibly on a Magblade in a 3 DD/1 Tank dungeon if paired with something like Mother's Sorrow. Like a conservative alternative to Master Architect. But other than that, does anybody have any experience with this set?