So I have played this game for a couple of seasons now, I have always liked the concept of Special Abilities, but have had trouble seeing any significant effect of it/them.

this season I have made a crude test of the. three players ML/AML AMC and MR/AMR. they have all played the same games, had same respective role and here is the result.

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so in my honest opinion, although painful, there is No effect of Shadow Strike