Shamans who completely mess up everything
Shamans that lets one person go in first and kills everyone else
Shamans that brawl it out with other shams, either killing that sham or everyone around them.
Shams that think Vanilla is Survivor and kills everyone.
Shams who doesn't listen to other player's suggestions. (For example, if a player says "Try using the balloons" if they don't have springs but instead, kills everyone")
Shams who say "pro it" when it's a map that can't be done without a shaman's assistance
Finally, Shams in survivor who saves one person and kills everyone else.