Oh Epyllion.

And alright! Was mostly thinking in terms like... okay I don't actually have a good example thought up, but like if someone was all "I need help flying over there" would the Darkness grant temporary flight for a price? Or if someone went "I need them to leave me alone" would the Darkness hurt the drake being talked about to keep them away? Or "I need a friend" = bam the Darkness just turned someone into a friend via shadow corruption stuff! 

These are not Fellwing examples, ha, just my tired 2AM brain ones.