The basic idea is we have an amnesic girl inside the core, and she joins up with Raynor at some point and somehow derails the plot. Writing Thanquol well is a delicate balancing act between his utter inability to actually succeed at his schemes (while, naturally, getting all/most other skaven involved with them killed) with his status as a sorcerer that could magically bitch-slap the average wizard into a bloody smear. and he has, entirely aside that, the luck of the freaking devil himself- no matter how disastrously wrong- or right- his schemes go, he always, always manages to scurry away, alive and largely uninjured, to plot another day. but at the same time, he's also one of the most terrifyingly powerful Grey Seers to ever walk the earth, second only to Seerlord Kritislik himself, at least in Thanquol's own lifetime, able to command depths of power that most others of his kind can only dream of. It's kinda like the semi-doublethink you have to do to write Thanquol properly- on the one hand, he'd this hilariously incompetent idiot, acting more along the lines of a Saturday-morning cartoon villain, sabotaging his own plans with his paranoia about anyone else benefiting from them, backstabbing his own allies with gusto even for the backstab-happy Skaven, and generally being far, far more dangerous to his own race than any of his so-called enemies. Yeah, the disconnect between 'cute smol fuzzy thing with big floofy ears' and 'snarling angry thing with very large, very pointy teeth and a bigass hammer' is one of the fun parts of writing Gremlins.

Wolver spiral knights