Thanks but it's not all invested objects, metalminds won't do it,
but the more general term "shardblades" would, so awakened blades, Aon Dor blades etc.
are invested enough to cut on spiritual realm, but yes.
and?
it'd be easier to find it in lovecraft, and having recently gone looking for Mishram's name inspiration myself the closest I could find was
https://en.wikipedia.org/wiki/Cthulhu_Mythos_deities#Mh'ithrha
Yes but it would work, and has when there are no shards present, and while yes First of the sun has that to, shards have been involved there.
It's something the Shard does and let's the spren do becasue she wants her to learn.
They don't gain powers so much as physical/mental changes, i would argue for them being a natural outgrowth of the functions of the Cosmere.
Pure cultivation, in reguards to this, it would be weird if Cultivation is sitting around having the Nightwatcher preform Honor's magic.
Honorblades don't have spren either.
Voidbinding comes from the Unmade, not just Sja-Anat.