Best farming sites are :

Scheol for Novictum. Kill the spirits at the far North of the zone, just before Ergo.

Scheol Catacombs for Embryo's. Make sure you have a strong team

Elysium Catacombs for Visions.

***Catacombs are entered through holes in floor in un-/remeeded temples' spirit rooms.

i took Spirit hunters there and i got 1 in ever 2 kills,might have been a bad day then,but i do have some Novictums if anyone needs.atleast i know i have the ones u need Arch =P

Elyisum for the Visions (go into the spirit room take a right and jump in the pool of and kill the walking cannons and things there!) also in Elyisum the bosses drop the Embryo`s but the spawn time is over an hour so go to the same dungeon in Scheol from "the keep" the mobs drop the Embryo`s quit regulary

I suggest to do the  Visions 1st (easy!)
Canister of Pure Liquid Novictum drops of most of the mobs around the Whte Temple in Elyisum. you can only carry one at a time (easy!)

Specific Novicutm most pop place is South of "East of Elyisum" there is a temple full of Elyisum Spirit Hunters and Walking Spirits or Wandering souls they drop the Novictum (easy!)

Embryo`s basically the best place to get them is from the Dungeon in the keep, the drop rate is good but you might need a team to go with you

Combining liquid notum with insig also requires 550 complit
Combining the resulting glyph with the armor requires 450 complit.