Legions II and XI:
Army-wide ability: Fanboyisms
Force opponent to break down into endless speculation as to what really happened to these two legions. Opponent's models must re-roll all successful attacks, psychic powers, and run rolls because they are too distracted by the debate to properly fight. Any wargear or rules that would allow a re-roll (such as master-crafted weaponry) cancels this out and instead simply rolls as normal (no re-roll regardless of success).