The sludge monster (can't find a better name)

This monster was created from the remains of those that fell from the effects of poison spell, their remains manifested to create this creature. It's stops enemy fire in their tracks for a while. Doesn't handle heat too well, or mortar shots.

Level1
HP: 3700
DPS: 75
Speed: 10
DE Cost: 300
Favorite Target: Any

Effect: This troop immobilizes cc troops for 3 seconds, also immobilizes enemy fire within a 4 x 4 radius (level 1) it does so by releasing a gas, and recharge of 1-2 seconds. Damages every 3 seconds.

Level 2
HP: 4000
DPS: 100
Speed: 10
DE Cost: 350

Effect: same as before except it lasts 4-5 seconds.

Level 3
HP: 4300
DPS: 125
Speed: 10
DE Cost: 400

Effect: same but lasts 6 seconds.