Plant EMP Mine for Invaders to trigger
Rules:
1. Place at any time on any space (other than the center spaces)
2. Mine may be moved by any player, but requires one action to do so
3. Invaders will receive 1 Hit when on that space; discard after triggered
4. Players may jump over or land on mines without triggering
5. Players may fire on Mine to hit ALL Invaders with their current Cannon setting