I have a quick question about the interaction between these two characters. When you trigger Mirri's ability it says "Instead of normal claim effects, kill (chosen) character." Would killing this character count as claim, thus triggering Rakharo's ability? I'm just hung up on the wording of "claim effects." For example on an Intrigue Challenge is the discarding of a card the "claim" or the "claim effect." as a side note on Claim 2 plots i assume since you only choose one character you can only kill the one instead of selecting 2.

"After a character is killed to satisfy claim during a challenge you initiated..." just means that a character has to die when claim resolves. It doesn't matter if it's "normal claim" or replaced claim through something like Mirri. It also doesn't matter what type of challenge it is. Mirri can satisfy the requirements for Rakharo's triggering condition.