Nightblood magic system?

[Trusk'our he/him]

Nightblood works by absorbing and corrupting investiture, effectively turning it into more of itself. But it also has a maximum amount of investiture that it can hold, so much of this changed investiture leaks away. My question is, does this investiture stay a part of Nightblood's essence, retaining traits from it rather than the shard it originated from? And if this Nightblood investiture returns to the spiritual realm to pool together, will it eventually form a magic system?

[Frustration]

31 minutes ago, Trusk'our said:

Nightblood works by absorbing and corrupting investiture, effectively turning it into more of itself. But it also has a maximum amount of investiture that it can hold, so much of this changed investiture leaks away. My question is, does this investiture stay a part of Nightblood's essence, retaining traits from it rather than the shard it originated from? And if this Nightblood investiture returns to the spiritual realm to pool together, will it eventually form a magic system?

We don't know, corrupted investiture isn't heavily touched on.