This might be a little strong but how in the hell can you consider Mischa's attack weak? He was able to fight back several champions almost by himself. Lestrange did not injure herself in the Potion Champion Brawl. Olu was not hurt solely cause of the form he was in is one of the most tanky forms someone can be. Mischa is not going to let another Matou run away from justice. You can not simply ignore the pissed off Bear in the room.
On a scale of 0 to 10 on how much Mischa hates Shinji, he is at 11 at the moment. Shinji is the ancestor to his family's most hated enemy as well as having killed one of the only champions that Mischa friends on the island. At this point Mischa has became wrath incarnated. Relying on simping keeping one step ahead of Mischa or running away is not a good plan. At some point Mischa is going to find Shinji and kill him. If not on this island, then later after the championship where he can call in help to kill the grandson of Russian's Enemy Number 1.
While I am curious about learning about Shamen, ultimately this Shinji is never going to be a Shamen. He already has enough skills that he is already learning to try jumping into a complete new Skill Tree on a whim. This Shinji is already has Eastern Wizard/Assassin/Alchemist skill trees to explore more. Starting another skill tree that he only explores in the most shallow way is counter productive of his goals. I would not turn down the knowledge if presented it but actively seeking it when there are far more important things to do seems silly to me.
[X] Information on Mischa