Find the Mark of the Empress and the Heartroot of Kypari Kor.
"Rending daggers of the great ones shall be bound with WOOD and SHADE." Hmm.
I've learned a lot about the Kor'thik mantid in my time here. I know that they maintain shrines within their settlement, Kor'vess.
One is a heartroot of the very tree that they inhabit. The other is a dark pillar, connecting them with their queen.
These shrines are the wood and shade. If my predictions are right... the daggers should react in their presence.