Effects
Basic
Landmines are placed in four random hexes on the battlefield. A troop stepping on a mine takes ((Power x 10) + 25) damage. Enemy creatures battling on their native terrain can see the mines and can cross them safely. To all others they are invisible.
Advanced
Same as basic effect, except that six mines are placed, and damage is ((Power x 10) + 50).
Expert
Same as basic effect, except that eight mines are placed, and damage is ((Power x 10) + 100).