[Where they came from, how it got on you without you noticing is a bit of a mystery. But a tiny black spider crawls down to each member of Lepus' forearm, and bites.
It's amazingly painless... but from the bite spreads a black mark across the skin. It settles into a familiar, mirror shape of the arachnid that just bit, and skittered off.]
To balance this, you have my favor. I look forward to your work.