Ever noticed how every trap in clash of clans is made so that you can see it a split second before it hits allowing you to make alternations (except for spring traps). What about one that's instant ?The basic concept is a landmine that explodes the instant a troop stands on it, similar damage, maybe a bit more compared to normal bombs but without giving the attacker the ability to quickly plant healing spells predicting devastation. It gives a more realistic outlook to what a 'trap' actually entails.