Notes from author
A moonlight gs mage tank build. feel free to swap:
Tin catalyst for logans
Wolf ring for a more situational ring like the darksood grain or bellowing dragoncrest
The black Sorcerer chestpiece to a light armor you find more fashionable
Some attunement and those pyromancies in order to reach 2000 health
Note: with the darkwood grain ring, fire surge, and the gauntlets of thorns, you will be very hard to backstab without it being canceled by your chip damage.
Note: If facing another mage, keep the Moonlight GS out at all times as it's passive magic resist buff will counter the resistance loss from the crown of dusk.