Tomas' story

So, what does this shard look like? I've been imagining a sort of ovoid/ellipsoid shape. Maybe with pointed tips on the long axis?

As a player, I'm fine with the idea of an arcane shard influencing a wild magic sorcerer's magical development (i.e. spell selection). So, please tell me, is there any particular school that you think Tomas would tend towards as the result of attunement to the shard? Whether intentional or unintentional on the shard's part, by conversations with it, from the knowledge its given him, just from its nature, etc.

Also, we could RP out these questions, but here's generally what Tomas will be asking:
Who made it/when?
How did it end up in the cave?
It's history in general - In return, Tomas would share that he was a former unauthorized magic hunter, but he's unsure about it now that he's on the run and his mind has literally been changed
What it wants/wants to do? (since he got that sense of drive from his insight roll before)
What else can it do/what could it do in the future?
EDIT: Specifically, even though the other questions alluded to it, what is its purpose?
(The following you don't really have to answer, since they're more about flavor/RP rather than concrete stuff, unless there's something specific you want to get across)
What's wrong with Tomas? Why is he magical?
Why should Tomas seek to continue seeking out his magical potential? What's the benefit/purpose of magic when it's unauthorized?
In relation to the above question, more generally, what does it think of magic? Good, bad?
Later on, how does magic work (e.g. schools of magic)? Why does it work? Ways to be a better sorcerer/take hold of his potential, when he eventually comes around to the idea (probably by next level or the one after that).

Fantastic, thanks. Also, those schools are exactly what I was expecting and it's good to know for sure. The other questions above the underlined statements Tomas probably would have asked first, so I'll do another time skip in this post to where he asks the first of the questions below the underlined statements.

Also, Tomas's real name is Nathaniel Docks. That's what he's getting at with the second line. He's wondering if the shard already knows about what he knows and/or what he's thinking subconsciously (e.g. "but my real name is Nathaniel!"). However, Tomas/Nathaniel wouldn't necessarily describe what he's doing in that way or have consciously thought through the fact that he's doing that.

Makes perfect sense to me, that's what I figured it would be anyhow. Also, for the questions above the underlined statement, is what you typed two posts ago all Spring had to offer as answers?

Alright, so what you're saying is basically just RP out w/e questions, then? I'm perfectly fine with that, I just didn't want to take up too much of your brain space by making you write it as dialogue if you'd have preferred to just info-dump some of the more concrete stuff. But if Spring needs to have a better working relationship to divulge that concrete stuff, that's reasonable too.

How much HP would that have been in terms of mechanics?

If it is a spell in the traditional sense (costs slots, has VSM, etc.), could you send me the textblock in PM or something?