I have noticed that while you can use troops as a defense against attackers, spells cannot, so i came up with this idea.
Storm Traps.
What is unique about this trap is that you can only build one, and it won't add on further town hall upgrades. what makes it different from other traps is that as you upgrade this trap, you will be able to unlock other storms (or spells if you want to call it that), and you will configure what storm will you use to defend your village, this trap has the same dimensions of a giant bomb, and it will have a trigger radius like that of a hidden tesla.
Possible Storms/Spells:
Level 1: Sand Storm- movement speed of troops will be reduced significantly, as well as their attack damage output
Level 2: Lightning Storm- deals devastating damage to troops and stuns troops for 2 secs.
Level 3: Fire Storm/ Meteor Storm/ Inferno Storm- deals devastating damage to troops and burns all targets for 4 secs.(2 damage per second)
Level 4: Snow Storm/ Hail Storm- deals small damage to troops and freezes all targets for 5 seconds on a small radius
In addition to this, these storms can also be upgraded in the laboratory
