Lich build idea

Can someone try coz im too broke to do it.
Basically its mana stacking for damage (possibly as defense as well)

So using unborn lich with winnowing flame + spell damage per 100 max mana + inc chaos damage.

Fire damage from winnowing flame converted to chaos using blackflame covenant

Ascendancy will be lich for unholy might + unholy might magnitude per 100 mana

get arcane intensity for more damage per max mana

will this work or just pale in comparison to crit stacking?