An alternative to a spy troop is a "Reveal Spell" that shows the locations of all hidden teslas and mines/bombs in a radius that grows larger with the level of the spell. The higher the level of the spell the larger the area revealed by the spell. The spell should take up 1 space and should have a time that increases with the radius as the spell get more powerful. Enabling attackers to decide whether they are willing to give up offensive power in exchange for better Intel would add a very interesting dimension to the game.... You would have to decide whether one Rage or two "Reveal Spells" would give you the best chance of getting three stars.
