Booby Trap

Use this Stratagem at the end of your turn.
Select one objective marker you control
that has a core unit from your army within
range of it. The next time an enemy unit
(excluding aircraft units) ends any kind of move
within range of that objective marker,
roll one D6: on a 2-4, that enemy unit suffers
D3 mortal wounds; on a 5+, that enemy unit
suffers 3 mortal wounds. You can only select
each objective marker for this Stratagem once.