Another “budget” SSF-Spellbreaker from me here we go!
One of my favorite classes, always has been. But, back in the days it was all about shadow strike builds (you guys remember Soulrend SS?). These days, I lean more into caster spellbreakers. It is a wonderful class to start out with due to the many strong skills available and easy to obtain items that supports them. In fact, I have one more in progress - stay tuned 
Here I have done a Phantasmal blades caster where I wanted to convert as much damage into cold.
Grim Tools Spellbreaker, Level 100 (GD 1.2.1.6) - Grim Dawn Build Calculator
Phantasmal blades has several damage types:
- Pierce (main node)
- Vitality (second node)
- Cold & Chaos (third node)
- Weapon damage (main node)
So to maximize damage we need to convert damage types to cold, have high casting speed, and high +%cold damage and OA in order to use the up to +50% crit damage on the third node. Also, skill ranks is of course important!
Gearing options for conversion
- Pierce to cold, early on I used two Spectral Longsword - Items - Grim Dawn Item Database with casting speed modifiers, other later options are Mythical Cortosian Chestguard - Items - Grim Dawn Item Database, Mythical Silver Sentinel's Mask - Items - Grim Dawn Item Database (non mythical also has conversion), Nightscorn - Items - Grim Dawn Item Database
- Vitality to cold Magi Mantle - Items - Grim Dawn Item Database, Gargoyle Waistguard - Items - Grim Dawn Item Database (a must have due to +1 nightblade skills), Mythical Dreadchill Grasp - Items - Grim Dawn Item Database (non mythical also has conversion), Mythical Starfire - Items - Grim Dawn Item Database, Mythical Banshee's Misery - Items - Grim Dawn Item Database, Mythical Dementia - Items - Grim Dawn Item Database
- Chaos to cold. This is the trickiest part, early on: Kra'vall Shoulderguards - Items - Grim Dawn Item Database, and later you have two nice faction items Bysmiel Soulbreaker - Items - Grim Dawn Item Database & Dreeg Soulbearer Tome - Items - Grim Dawn Item Database
Since chaos to cold is the least common conversion, we are pretty much set in stone to have main hand, off hand and shoulders for this conversion (and skill ranks).
With the belt as a “no brainer” item to use, it pretty much boils down to getting pierce to cold conversion from Cortosian chest, Silver sentinel head. And more conversion on the rings, and gloves 
The DPS rating is per blade. We have 6 blades to take this number times 6.
It should be noted that you get 5 blades at 16/16 and 6 blades at 24/16 so make sure to hit at least rank 24 on Phantasmal blades!
The Phantasmal blades skill also has in-built life steal which makes it quite a tanky char.
I used the Haunt relic for its skill which reduces the monsters life steal resistances - making it easier to leech back life from them.
Char is fast and fun, but you need to play decently well.
Here SR 32 is cleared
Video of sloppy SR26 run https://www.youtube.com/watch?v=zHT_M8NNwZ0
My set up lacks some stun resistances and could also feel better with a larger life-pool… upgrades will come…
Final build goal should use Harra Set and M Arcanum frigus gun
Special thanks to @tqFan for suggestions and ideas along the way.
Maybe next week I post my third (and final) SSF spellbreaker 
