PoE Bladefall, Cold builds

Let me preface this masterpiece of a build by saying that I grinded super hard early league, and now that it's died down a bit and I'm a bit burnt out atm I decided to "min-max" the ultimate meme build: Cast on Death. I wanted to take this silly support gem and make something other than just a portal for squishy MFers, so I did some thinking about what I could possibly do to maximize damage, and only one gem came even close: DISCHARGE. I hereby present the ultimate 1-shot boss killer: 1 shotting Drox before he can go invuln w/ 2man hp:

the idea here is to have a full army of animated minions, getting layers of % of phys damage as extra cold, and then converting the phys damage of minions into cold in order to abuse hatred's more cold damage buff. Dps seems fine enought, but the problem seems to be gathering the animated weapon army on boss fights, as you need to raise lingering blades first, so that they raise animated guardian's weapon on hit. Also, you don't have the full dps on bosses, as some of the animated weapons count come from the "on death" ani