Sorry for the long response, I can't write concisely to save my life.
That... definitely complicates things for the Grand Oculoid. Note to self: never underestimate D&D again. Way more powerful than it seems at face value.
I see, so the AP advantage might not even be there and could, in fact, be in the Abysswalker's favor. Good to know.
Hold Person/Monster aren't equatable to Telekinesis because they aren't actually holding the target with a force, but rather are mind-affecting abilities that, on a failed Wisdom check, paralyze their target, at least according to here
here. Telekinesis is using your mind to create a disembodied force to act on something else, in this case to grab and dismember... Which, upon doing a quick google search, he probably can resist to an extent, as Telekinesis
is a spell in 5e and functions as a Strength Check to avoid being pushed or lifted.
I was a bit confused by the Solar's Blessing because it was listed right after a statement referring to his heart and brain being cut out, implying parts of his body could be removed. Considering he doesn't have the regen to make that
not a permanent injury, don't really see how I rationalized that one. My bad.
Would he resist his body being erased from reality, though? On top of its Soul erasing properties, Hellfire in Edrania doesn't just reduce someone to ash, it reduces them to nothing but their life force. I'm aware D&D characters have partial resistance to existence erasure as per Bambu's blog, but the example given indicates the character still gets severely hurt by the attack even if it doesn't outright kill them, so I'm not unconvinced Hellfire won't do at least something to him unless he resists Hellfire specifically or can truly no-sell a source of existence erasure.
That's a bit of a problem for the Abysswalker, as The Grand Oculoid likes to abuse his range against enemies his hax even partially works against. Against someone who resists that
and is rather difficult for him to kill
like a certain dragon whose page I haven't gotten around to updating, along with the rest of the verse for that matter, he's going to want to put as much distance between him and his opponent as possible. Him being out of the Abysswalker's reach is inevitable.
A thought I just had due to mentioning Xylaie above, the Grand Oculoid can BFR him. When I started writing my initial post, I didn't realize at first that he lost access to his spells when he first became the Abysswalker, which to my knowledge also means he has no way of inter-planar travel without outside intervention, though as we've established by now I could very easily have missed something. While Bambu's blog indicates D&D characters can apparently resist being teleported against their will, it doesn't seem to say they can resist being stuffed inside of a portal that leads to the other side of, or inside of another, universe. I imagine it'd be pretty difficult to get him in one of the portals, but not impossible.
Sorry for vastly underestimating the Abysswalker and D&D as a whole there, but I'm still going with the Oculoid, as his main game plan in this situation literally makes it impossible for the Abysswalker to attack back, alongside the fact Hellfire might still be able to damage him and, if all else fails, he can BFR him by throwing portals at him until he
fails a Dexterity saving throw falls into one.
