How Are You Using 'Power Siphon' Seasonal Power (not mana shield)

Trying to experiment with weaker core skills that I find fun on my necro and Power Siphon is one of the strongest options this season for core skills specifically.

However, even with Starless Skies, resource pot, RCR on ring + amulet and Shako with max resource GA I cant seem to consistently use my core.

Is this really meant more for channeling builds and sorcs with Mana Shield?

I use it with Soulrift, just spamming it.
Apogeic resets Crazy Brew’s 15 second timer after 10 spams, and then you repeat. (roughlly you just hold it down for about 3-4 seconds till your heal resets)

Yes I throw in curses and CE to hit multipliers but you can just do the part above and it works well enough.

And yes it is broken.

Here is a video of how it plays. And link to the build.