i made some theorycrafting around this idea lately.
the build is still fresh and only PoB, but it seems like a nice combo:

HOW IT WORKS:
+"the queen's hunger" triggers offerings that affect you (AT 100% EFFECT)
+by using "leash of oblation" you can have an offering of each type
+skill duration helps keep offerings up, but you need increased duration on chest and passives
+"storm burst" benefits heavily from skill duration
+"storm burst" is a channeling skill, so using "the immortal will" makes the harbinger apply a nice buff to you
+as bone offering grants block chance and life gain on block, and harbinger makes you immune to curses, ailments, stun and gives you 20%reduced damage taken, i see some tank potential in this

CONS:
-the curse immunity makes it imposible to use self temp chains for keeping buffs up (solstice vigis is still an option)
-you need corpses around for the offerings to work. with 5 corpses consumed every 5 seconds you get offering time to around 24sec.
-still untested, don't know if the mechanics involve work as i hope (never played storm burst before too)

UNFINISHED POB: https://pastebin.com/q64Z6GZk

CHEERS!

Edit: any feedback on "march of the legión"? It sounds like it can be nice for having múltiple aura buffs

EDIT 2: BIG UPDATE. decided to go criticals with trickster, focussed on survivality and raised dps. skipped most non mandatory uniques, so that i can fill the slots with rares with life + resistance. will try it on standard soon :)

heres the trickster PoB of the idea: https://pastebin.com/s7Td4tz6

Edit 3: harbinger buff Is not affected by INC duration on shield, nor by efficacy. Only second wind affects it's frecuency. Mana sustain seems to be a problem too. Still testing

Edit 4: self temporal chains + solstice Vigil Is the way. The build feels nice when you have bone offering, and amazing when you get flesh offering along too, but even by investing heavy on duration i cannot get 3 offerings most of the time.

Also, the harbinger buff Is not affected by duration, and sometimes the harbinger delays a little to cast it. Must cap slower time and pick kaom roots.

Mana Is not even close to be a problem, i was testing it without weave the Arcane lmao.

Corpse generation vía tótem Is not worth, the tótem dies easy, you are better casting desecrate once every time you get a new offering. You can use the tótem to cast wrath instead and get DPS boost on bosses.

AoE Is not great and getting more seems to help with boss DPS and clear.

Tested quickly on a lvl 70 trickster with 100 chaos budget, with a rare amulet and unleveled gems.