Tunnelling Teams aren't deployed at the beginning of the game, but use the following rules:
After both sides have set up (including Scouts), place a tunnel marker anywhere on the battlefield (a coin will do). At the beginning of each Skaven turn, except for the first, roll a D6 to determine if the Tunnelling Team emerge:
First turn | N/A |
Second turn | 4+ to emerge |
Third turn | 3+ to emerge |
Fourth turn | 2+ to emerge |
Fifth turn | Emerge automatically |
When the team emerges, roll a Scatter dice and an Artillery dice. If you roll a Hit on the Scatter dice, the marker stays in place; if you roll an arrow, move the marker the distance indicated by the Artillery dice in the direction shown by the arrow.
Once the final position of the marker has been established, replace the marker with one of your models and place all the other models within 2" of the first one. The team emerges at the beginning of the turn (this is the very first thing they do that turn) and can then act normally, even declare a charge!
If the marker is moved under an enemy unit, the Tunnelling Team will automatically engage it in close combat on the side that is closest to the marker (the team counts as charging). If the marker is moved under a friendly unit or impassable terrain, place the Tunnelling Team on the closest edge of the unit/obstacle. If the marker is moved off the battlefield, the team has got lost (as per result 3-4 on the Tunnelling Mishap table).
If you roll a Misfire, roll a D6 and consult the Tunnelling Mishap table.