This idea came to me from out of nowhere!
Hidden Walls pop up from the ground to force troops to fight through them when they thought there was a free path.
Haven't yet thought about the details, but maybe one wall becomes available for each TH level starting at TH6 (so TH10 gets 5 of them), and they could be upgraded to same max level for each TH regular walls, but obviously more expensive.
This is my first ever new idea for coc so keen to hear back what everyone thinks😄
