The first discovery includes an Unused Spell icon:
A corresponding name or description could not be located in the text dump, meaning we might not be able to learn much about this. There is one curiosity amongst the spells in the text dump though, but I’m not sure if it’s related. In itemmsgbnd.text, you can find a list of shortened spell descriptions that look like this:
- Fire Soul Arrow
- Shoot a stream of fire
- Soul Arrow
- Flame Toss
- Change into Black Ghost (Ghosts N/A)
Though I can’t imagine it would serve much purpose as a testing item for the devs, who would likely have their own tools for switching phantom-types (why would you incorporate that as a spell and draw an icon for it?). But who knows.
The cut content also includes evidence for what I believe to be an alternate summoning/ invasion system where your phantom type would be determined by how similar or dissimilar your Character Tendency was to the host. Have a similar tendency, and you’d get summoned for co-op, have the opposite tendency and get summoned for PvP. The terminology of “black ghost” pops up again for that. Anyways, if there was going to be a randomized co-op/ PvP system, I could see the need for an item that’d ensure you only invade for PvP when you want to. Perhaps this could’ve been something like that.
Anyways, this is all just speculation. The only thing we’ve found so far relating to spells is the icon above, and the odd “change into black ghosts” text. There is nothing that concretely ties them together nor explains what they are, so make of that what you will.
You can find the complete spells texture sheet and individual icons here: