Sparton, do you have any news in respect to the Immunity bug?
While it is nice, that the Prisoner is somehow being looked at, every "fix" makes things far worse. Now he blocks Talisman buffs as well. Since he already blocks the above mentioned Repeal passive - even if it is protected by Immunity Talismans - there is absolutely no way to counter a taunt festival and it is worse than half a year ago.
I think the Prisoner is also blocking active effects form Talismans (e.g. Void Shields and Energy procs, but that is hard to verify...especially when taunted all the time)