There's some new accessories coming to ES within the next two updates, one of which significantly changes the playstyle when in use. It would likely need to be included in a Soul like that (toggleable with the set-bonus menu thingy, probably). Also, that crafting recipe is kinda redundant, what with including both a Hallowed Circuit and a Defender emblem. I'd replace one of the two with a Celestial Chip (which may get changed to a Pulsar Chip in the next update). And what's with requiring a soul to make another soul?
But yes, the mod is definitely still alive.
It's in regards to Fargo's Souls mod and how this is the parallel to the Conjurist's Soul (I made a mistake, it's actually the Occultist's Essence). Note the requirements having Balance - as oppressed to the Conjurist focusing on Minions, the Dell focuses on Sentries instead, but still has the increased Minion count like how the former increased Sentry count