Not all terrain surrenders its secrets to a mere visual appraisal – sometimes the only way to find out its properties is to venture inside...

The effect of a piece of mysterious terrain is not decided at the start of the battle. Instead, it is rolled for immediately when a model enters it (or is deployed within it). Once rolled for, the mysterious terrain feature is no longer quite so enigmatic – it retains that effect for the duration of the game. If the unit whose model has triggered the effects is moving under its own volition, it can decide to continue its move as normal or immediately stop, so that only the first model toenter is inside the terrain feature. On the other hand, if the unit is charging, fleeing, pursuing or subject to some kind of compulsory movement, it must complete its move – good luck to them!