This is a a Cold based Phantasmal Blades build using the flat Cold Damage in Nether Edge and the item Speaker for the Dread.
Do remember that Phantasmal Blades is a Shotgun skill and the sheet DPS is that of a single projectile.
Actual DPS = Sheet DPS x No. of Projectiles.
Grimtools-
Cold PB Breaker -https://www.grimtools.com/calc/lNkqJL4V
*Screenshot with Pneumatic Burst
Cold Devastation + PB Breaker -https://www.grimtools.com/calc/mN4W6n0Z
*Screenshot with Pneumatic Burst
Aether PB Reaper - https://www.grimtools.com/calc/aZqK7jd2
*Screenshot with Soul Harvest, Pneumatic Burst and Hungering Void
FAQ -
Can the Cold PB work with an Infiltrator/Reaper?
Yes, I personally prefer the defenses of Arcanist so went with it
Which is the best setup among these?
The Cold Spellbreaker is my absolute favorite, the reaper is a close second while the Cold Devastation Spellbreaker is a third. These are just my personal preferences, they’re in no way an actual comparison. Performance wise I don’t have any comments regarding which one is better.
Why go with Time Dilation on Cold Devastation Setup but not on the Cold Breaker Setup?
On the Cold Devastation Setup, Leviathan works just fine. Time Dilation allows me to chain devastations (well 2x at best :p).
On the Cold Breaker Setup however TD doesn’t do much besides help us reduce Mirror’s cooldown. But TD’s defensive capability isn’t needed for main campaign and therefore from a damage POV Leviathan is much better for it in MC.
Can non-Transmuted PB be used in rotation with TSS?
Yes, it works but you loose out on Frenetic Throw’s constant life leech. Although w/o the transmuter each throw is an almost full heal.
Can the Aether Concept work with a Spellbreaker?
The lack of RR is why I am apprehensive to even attempt it.
Why isn’t Lethal Assault being used on the Breaker but Soul Harvest is used on the Reaper?
I personally have a hard time maintaining the temp buff of ABB due to the nature of its activation trigger, it’s a major hit to QoL of the build so I choose not to use it. Bone Harvest on the other hand doesn’t affect our QoL at all and adds to the DPS so the Reaper can afford it.
Will this work w/o specific rolls on this particular dagger??
You don’t need the exact MI dagger, you need a cold weapon with Assassin’s prefix with bonus to Phantasmal Blades.
Is Mark of Consumption usable here?
Mark of Consumption can be used as Medal instead of MoD for even more Life Leech.
I prefer the Circuit Breaker over it.
Isn’t Ultos better than Leviathan?
It is, Ultos constellation would be a great addition for the RR and %Lightning bonuses (for TSS).
I just like Leviathan’s proc and decide to stick with it.
Leveling Tips (Spellbreaker):
1. Skills-
-I never leveled with Phantasmal Blades, no idea how that’d work out
-Use Searing Ember/Flintcore bolts (preferably the latter), their granted skills are Fireblast and Greater Fireblast and should help you a ton till you reach Homestead
-When you reach Homestead spec, to Panetti’s Replicating Missiles. They’re energy intensive so don’t go too deep into them, just get enough to clean trash.
-At level 50 switch to Phantasmal Blades, now you’re set to go. Make sure you have Ectoplasm in your ring slots to cover energy issues that you encounter in the early stages (end-game has zero energy issues)
2. Stats-
All into Physique, spirit investment is required for equipping gear. Make sure your spirit investment isn’t more than the requirement for BiS setup.
3. Devotion-
-Get Elemental Storm (attach it to P. blades) and Wolverine first.
-Get Behemoth
-Then when you have points for Leviathan respec into the devotion setup in the GrimCalc
4. Faction Rep-
-All faction rep is easy to get except Black Legion.
-Kill the Outcast in Normal/Veteran and farm her dungeon and get Legion rep to half way from Honored to Revered
-Make sure you don’t kill her in Elite and Ultimate, she’s important lore wise but that’s not it her resistance augments are priceless.
In Closing-
Back when I first posted this I hadn’t seen any build do this and due to the general lack of unique cold casters I decided to post this one, to my surprise Crate gave a shit ton of support to it and now the concept is really OP.
The other concept is a cute Aether Reaper for those peeps who’ve been looking for Aether Casters that aren’t Arcanist hybrids.
I hope you guys enjoy this.
farming loxmere now as we speak! 
