A very cool concept sheet done for me by the talented and fantastic  GeKsuRoll pretty exhaustive and detailed, but I will add a little more lore & context to this.
- the wall slam thing's title is “crucible crush”. Raises 2 walls out the ground, and smashes into a group of targets. while the outside of the walls might appear to be solid and possibly have an ornate design, the inside would be supernaturally molten glass. The victims would be suspended in a brick of glass twisted in agony but still very much intact. While this method of crowd control is powerful on its own It combines with other techniques he has, if he uses sonic blast the victim explodes into shards of glass causing bleed/slash status on those hit by the shrapnel. also the thin cross sections when the glass blocks are split are re-enforced by their life force, and reflecting gunfire & damage as they explode. I was thinking they also had some ability to inflict “fear” status effect from the psionic screams they could give off trapped within the glass, but it’s hard to show that so it’s just a random thought ATM.
-crucible crush and the ability to split the target into pieces is partially inspired by the horse scene from the cell https://www.youtube.com/watch?v=gWVTP7jBv-8
-the name for the ult is "Deus irae", not shown here but the skeleton form makes them more likely to miss and also makes him drastically faster. when the duration is finished much of the glass gets pulled in and returned to his body but some of it doesn't. that's where most of the weapons others can pick up come from (I imagine they'd get more milage from your allies throwing them than trying to use them in sustained combat)
- the vials are primarily supposed to kind of come from smashed victims or something turning them into a pinata for loot. think of it as a more plausible way for potions to drop from slain enemies. I imagine if he shifts one of the servants into a potion instead of a pinata it's way more effective though. I imagined the potions would mostly contribute to shield/overgaurd or status clensing. the healing efficacy would be low since I imagine since that's not really his main thing. I also think he'd have REALLY low HP but would have off the charts shields and/or armor DR. tanky, but with limited or no life force (maybe he casts from it? hmmm)
-I actually never came up with a name for the orbiters which would be the 3rd ability I guess? maybe I should just call them "soul thralls" or "summons"? maybe "necra-drones?"

ALSO this isn't the first character I experimented with weaponizing, there are like 4 pages of stheno getting a similar treatment, you can start here and just hit next image since I posted them together https://www.furaffinity.net/view/35549804/

and yeah still no lewds, there's a comic I think you guys will like and hopefully the guy will finish it soon : P