There was thread on acid grasping vines
That is an interesting take on that as an alternate set, but I personally felt 3/4 Judgment of the Three set fit the conjurer grasping/DEE idea fwiw. Energy is definitely an issue.
However, neither of these sets are caster sets (Rotgheist or Judgment). Thus the minimal energy requirement lowers what the regen somewhat, as you are inclined to minimize energy and maximize physical.
–>I also think that more energy regen would be good for Rotgheist and it needs more defining features. Rotgheist item slots also occupy the primary energy grabs: head, chest, amulet