EDIT: As of the League of Explorers Patch, you cannot target Lord Jaraxxus the Hero with Light’s Champion anymore.
Using Light’s Champion to silence Lord Jaraxxus the Hero was discovered by /u/Ninjaspar10 https://www.reddit.com/r/hearthstone/comments/3m3c33/til_lights_champion_can_silence_jaraxxus/ and recorded by DisguisedToast: https://www.youtube.com/watch?v=zotCRXe22tc (It was also found by ZeroRin a few days prior, but not made public information.)
The setup used in this video was suggested to me by /u/ploki112.
So, what happened?
Normally Immune enemies cannot be targeted (as though they had Stealth). However, when we play a minion with a targeted Battlecry, the minion enters Play and remembers its target. Then a number of Phases run — first, the On Play Phase, where Illidan Stormrage triggers Knife Juggler triggers the Ice Block. Targeted Battlecries and Spells do not re-check their targeting requirement, and so in the Battlecry Phase Light’s Champion silences off the Immune effect, and finally in the After Summon Phase Knife Juggler is triggered and finishes the job.
Patch: Patch 188.8.131.5286 (TGT patch)
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