What would happen to a thief of time if they went grimdark or had a connection to the horrorterrors?

King Crimson: Requiem.

Okay jokes aside, I’m not quite sure? Maybe they’d acquire the Void Aspect and become more like a Thief of Void, draining more and more dark Majyyks from the Horrorterrors to get more powerful, maybe even breaking from their control or getting corrupted even deeper.