He said nothing as he walked back into the chamber he had occupied prior to her arrival. It too was dark, as it seemed the Sith lord had no need of a light source. Except there was one other peculiar light-source; a box near the stone-seat where he had been sitting only moments ago. It was small - enough to fit in his hand, or in both of Eir's hands.
The light softly eminating from the box had the same purple-ish glow as his mask.
"This," he picked up the box, "contains, shall we say, essences of the Dark side. Once imbued within a Force sensitive person, they grow connected to the Dark side as if they had basked in it their entire lives... I would say perhaps even further enhancing their power with the Force." Destrus seemed to be looking at her. "But of course you ask why would I give you something that is a gift, instead of asking for a price. These of course are still in the testing-phase; it all depends on your own willpower how it affects you, or if it will consume you."
