Sir Jimmony's Buffet's Gryphon Bay
The Chart for the Ambush rule can be found on page 33 of the Beastmen PDF. But I will list it for quick reference.
Roll a d6 for the unit in the Remaining moves phase each turn starting on the first.
1: The Unit is lost. The unit enters from the table edge of the opponent’s choice.
2-3: The unit is still getting into position. Roll again next turn.
4: Th unit arrives on the table edge to the player’s left
5: The Unit arrives on the table edge to the player’s right
6: The unit arrives on the table edge of the player’s choice.
When the Unit enters play, you may choose the point on the table edge that it moves on from. the unit can move exactly as if it had pursued an enemy unit off that table edge in the previous turn. Units that do not enter play before the end of the game are counted as killed for the purpose of determining victory conditions.