Here's another one of my personal ideas I've been tossing around with friends for a while. It's a DE troop, unlocked at TH10 that is perhaps one of the most unique troop ideas out there.
Flavor Text: Much more than a shadow, the Dream Eater absorbs the life force of enemy defenses and troops to fuel it's own fight! It starts off weak, but can grow to be a true terror!
Basic Description: The Dream Eater is a phantom troop, meaning it can only take damage from immaterial attacks, consisting of: Hidden Teslas, Wizard Towers, Inferno Towers, X-Bows, enemy Witches, Wizards, and Dragons. It starts off pretty weak, but grows in strength as it absorbs the hitpoints of enemy buildings and troops. It doesn't have a set attack, but rather an area of influence that it constantly drains hitpoints from with increasing severity as it goes. The more hitpoints it absorbs, the more powerful it gets. See below for a full chart detailing its strength gains.
Chart Time!
Starting Qualities
HP: 500
DPS: 25
Area of Influence: 2 spaces
Movement Speed: 12
After 1000 Hitpoints
HP: 500
DPS: 30
Area of Influence: 2 spaces
Movement Speed: 12
After 2000 Hitpoints
HP: 500
DPS: 40
Area of Influence: 2.5 spaces
Movement Speed: 16
And so the pattern continues, with 10 DPS added for every 1000 hitpoints, another .5 area of influence added every 2000 hitpoints, and 4 movement speed added every 2000 hitpoints. There is, however, a cap, and that's set at 10000 hitpoints, as to prevent the Dream Eater from being too OP. I hope you guys liked the idea, feel free to comment or leave suggestions!